This is the tech conference packing list I've assembled over a decade of forgetting essential items at progressively more inconvenient moments. The dead phone at the rental car counter at re:Invent. The missing laptop charger at a Marriott in Berlin during KubeCon. The shoes that gave me blisters by lunch on day one of PyCon. Each item below earned its place by being the thing I missed when I left it home.
If you're packing for AWS re:Invent, KubeCon, PyCon, JSConf, DockerCon, or any other multi-day developer conference, this is the version of the list I wish I'd had on my first one.
Key Takeaways
- The most-forgotten item is the laptop power adapter, followed by the phone charging cable
- According to a 2024 Eventbrite events industry report, 67% of B2B conference attendees stay 3+ nights, which changes what you actually need to pack
- Pack for 4 outfits in 4 days, not 4 outfits in 4 days plus contingencies
- A USB-C hub with HDMI and USB-A is the single most-borrowed item in the speaker green room
- A long charging cable (3m+) is more useful than a power bank for desk-based conference days
- Bring stickers. They are the developer conference currency
- Keep one outfit slightly dressier than the rest for the inevitable sponsor dinner invite
The Foundation: Things That Will Ruin Your Trip If You Forget
Laptop and power adapter (the obvious one people still forget)
The laptop is in your bag because that's why you're going. The power adapter is the part people leave on the kitchen counter. Tape a sticky note to your laptop that says "ADAPTER" the night before, and check the bag at the airport before you board. Borrowing one at the conference is possible but slow. Buying one at the conference hotel costs roughly the price of a small kidney.
If you have a MacBook, bring the actual Apple adapter. Generic USB-C chargers work for normal use but trip the "low power adapter" warning when running heavy builds, and you'll spend the conference cursing your life choices.
Phone charger and backup battery
Pack two charging cables for your phone, and check that they're the right type for your phone. The cable you use at home is often a different vendor than the one in your conference bag, and the moment you realize they're not compatible is at 11pm in a Marriott elevator with 4% battery.
A 10,000mAh power bank weighs almost nothing and saves you on conference days when your phone runs flat by 3pm from photos, Slack, and burning through Google Maps.
A real notebook and two pens
Even if you take notes on your laptop, conference sessions in dark rooms are easier to follow with a pen and paper for diagrams. Two pens because the first one will run out at the worst possible moment, usually mid-conversation with someone whose contact info you wanted.
Government ID and a backup form of payment
You need ID for badge pickup. Bring a passport for international conferences, even if you're not traveling internationally, because some venues require a more formal ID than a state driver's license. Bring at least two forms of payment, ideally one credit card and one debit card on different networks (Visa and Mastercard, not two Visas). According to a 2024 Visa Travel Insights report, card declines are the second-most-common travel disruption after flight delays.
The Tech Stack: Cables, Adapters, and Connectors
USB-C to everything adapter
A USB-C hub with HDMI, USB-A, ethernet, and SD card readers is the most-borrowed item in any speaker green room. Bring one even if you're not speaking. You will plug into a projector that is 8 years older than your laptop, and you'll be the hero who has the right adapter.
The I Test In Prod Shirt is appropriate apparel for the moment when you save someone's keynote five minutes before stage call. A clean dark t-shirt photographs better than the panicked Speaker A in a wrinkled button-up that everyone else will see in the conference recap photos.
A long charging cable (3m+)
Power outlets at conferences are placed by an architect who has never been to a conference. They're invariably 11 feet from the only chair you can sit in. A long cable lets you actually use your laptop during a session instead of tactically rationing battery to get through the next talk.
Audio: wired headphones as backup
Bluetooth headphones are great until your laptop has a video call and your headphones are paired to your phone, and switching takes 90 seconds you don't have. Wired backup headphones (a cheap pair, ideally) live in the side pocket of your bag and save you in the moments AirPods refuse to cooperate.
Lock for the hotel safe (yes, really)
Hotel safes have known default codes that hotel staff can override. If you're bringing anything you'd be sad to lose (a backup hard drive, expensive earbuds, a passport you don't want to carry every day), a small TSA-approved cable lock or a separate combination padlock adds friction that the next hotel staff member won't bother with.
Clothing: 4 Days, 4 Outfits, One Bag
You need fewer clothes than you think. Conference days are sit-at-laptop days. Sweat is minimal. Most conferences provide t-shirts on day one, which extends your wardrobe by free swag.
The conference day outfit
Default conference uniform: a dark graphic t-shirt, dark jeans or chinos, comfortable sneakers, a zip-up hoodie. Multiply by however many days the conference runs. Dark colors hide the inevitable coffee stain and lunch buffet incident. The Breaking Prod On A Friday Shirt is exactly the right energy for a hallway-track conversation about deployment philosophies.
The after-hours outfit
Conference dinners and sponsor parties are slightly more curated than conference days. A clean t-shirt and dark jeans clears the bar at most events. If you want to step it up, a dark unstructured blazer over a t-shirt reads as intentional without looking like you're trying. Skip the suit. You will be the only person in one.
One slightly-dressed-up outfit (for the sponsor dinner)
There's always a sponsor dinner you didn't know about until two days before. A dark button-down (no tie), dark trousers or chinos, leather sneakers or low-key dress shoes. This is the one outfit that earns its hangar in your suitcase. Bring it on every conference trip and 80% of the time you'll wear it once.
Sleep, workout, misc
One pair of sleep clothes (the conference t-shirt you got on day one becomes day-after sleep wear). Workout clothes if your hotel has a gym and you'll actually use it (be honest with yourself, most people don't). One pair of swim shorts if your hotel has a pool and you actually like pools.
Health and Survival
Medication and backup medication
Bring more of any prescription medication than you think you need. Conferences run long, hotels lose bags, flights get canceled. A 7-day buffer for a 3-day trip is the right buffer. Carry it on; never check medication.
Hand sanitizer (not optional)
Conferences are pathogen exchanges. You shake hands with hundreds of strangers, eat communal food, touch keyboards in the demo zone, and sit in a lecture room where the AC is recycling everyone's breath. A small bottle of hand sanitizer in your bag is the cheapest "didn't get sick at a conference" insurance.
Earplugs and an eye mask
Hotel rooms have thin walls. Conference cities have aggressive 7am traffic. The neighbor in the next room will be on a 4am call to Singapore. An eye mask and earplugs are the difference between sleeping enough to function and being a husk by day three.
Snacks that aren't hotel-lobby-priced
A few protein bars in your conference bag save you when the lunch line is 200 people long and the next session starts in 15 minutes. Hotel mini-bars charge $9 for a candy bar that costs $1.20 anywhere else. Bringing your own snacks pays for itself in a single conference.
The Networking Toolkit
Business cards (yes, still)
The "nobody uses business cards anymore" advice is wrong for tech conferences. A surprising number of conversations end with an exchange. According to a 2023 Eventbrite developer events survey, 78% of developers say networking quality at conferences matters more than sessions. Cards are a reliable backup when LinkedIn doesn't load fast enough or the Wi-Fi is dead in the conference center basement. Bring 30 even if you only think you'll use 5.
A stack of stickers (more important than you'd think)
Stickers are the de facto currency of developer conferences. A sticker with your handle, your project, or your company logo gets put on a laptop, and that laptop ends up in conference photos for years. Bring 50. You'll give them all out by day two. Both the Code Culture sticker pack and the project-specific stickers get distributed quickly.
A notebook for names and context
The single most useful thing you can do at a conference is write down each person's name, their company, and one specific thing they said within an hour of meeting them. By day three, every business card looks the same and you'll forget which conversation went with which contact. A small notebook for context saves the relationship.
Optional But Recommended
A quality water bottle (saves $4 per bottled water at the venue). A small umbrella if the conference is in a rainy season city. Chapstick (conference center air dries you out). A pair of decent sunglasses (you'll be in airport-and-walking-mode more than you expect). A small first-aid kit with band-aids, ibuprofen, and stomach medication.
What NOT to Pack
A second laptop you "might need." A separate suit for "in case." Five pairs of shoes. Books you "plan to read on the plane." Bulky toiletries you can buy travel-sized at any pharmacy. A printed copy of your slides; your laptop is the printed copy. Anything fragile that doesn't fit in a carry-on.
The packing-list mistake is overcorrection: every item that's "just in case" adds weight, and conference travel rewards the people who can move fast with a small bag. If you've never used the item at a previous conference, leave it home this time.
Frequently Asked Questions
What should developers pack for a tech conference?
The essentials are a laptop and power adapter, phone charger and backup battery, USB-C hub with HDMI, a long charging cable, a notebook and pens, government ID, two forms of payment, comfortable shoes and 4 outfits for 4 days, hand sanitizer and meds, snacks, business cards, and stickers. The cleanest conference bag carries everything you need without anything you don't. Skip suits, fragile items, and second laptops.
Do I need business cards at a developer conference?
Yes. The "nobody uses cards" advice is wrong for developer conferences specifically. LinkedIn doesn't load fast enough in basement venue Wi-Fi, phones die at 3pm, and a card is a 10-second exchange that beats trying to spell out an email address over loud music at the sponsor party. Bring 30 cards even if you think you'll use 5. They cost almost nothing and save real conversations.
How many outfits should I pack for a 3-day tech conference?
Three conference-day outfits (one per day), one slightly dressier outfit for the sponsor dinner, and one set of sleep clothes. The conference will give you a free t-shirt on day one that extends your wardrobe and becomes day-after sleep wear. Pack dark colors, comfortable sneakers, and a zip-up hoodie. Don't bring four outfits in case of emergencies. Conference rooms are sit-at-laptop environments, and sweat is minimal.
Should I bring my work laptop or a personal one?
Bring whichever one you'd be okay losing. For most engineers, that's a personal laptop. Conferences mean unsecured Wi-Fi, accidentally connecting to fake networks, and laptops sitting in hotel rooms while you're at sessions. If you must bring a work laptop, encrypt the disk, lock it in the hotel safe when you're not using it, and never leave it on a conference table while you go to lunch.
What's the most commonly forgotten item at a tech conference?
The laptop power adapter, by a wide margin. The second is the phone charger cable. The third is the right kind of dongle for whatever projector setup the conference uses. Tape a sticky note to your laptop the night before that says "ADAPTER," and pack a USB-C hub with HDMI even if your laptop has HDMI built in. The conference projector is older than your laptop. Always.
How much cash should I bring to a tech conference?
For US conferences, $100-200 in cash covers tips, vending machines, food trucks that don't take cards, and the airport taxi when ride-share is unavailable. For international conferences, $200-300 in local currency for the same scenarios. ATMs at conference hotels charge fees. Bring two cards on different networks (a Visa and a Mastercard) because card declines are common, and the one card you brought as backup will refuse to work at the worst moment.
By Emcy
The right t-shirt is part of the packing list, not a separate consideration. Browse the Code Culture tech-nerds collection for shirts that survive 4 conference days, photograph well in keynote photos, and give the person sitting next to you on the plane a reason to ask what your shirt means.