Convention Must-Haves?

I'm curious, what do you guys always bring with you when attending conventions? I feel that we all have a basic list- sewing kit, extra buttons, a few snacks... But I think that there ought to be a few unique items that we each bring with us to every con we go to. So how about it- what's on your con packing list?

Nothing out of the usual comes to mind for me. Probably just about what everybody else might bring who might usually attend conventions. Cosplay, overnight clothes and toothbrush if one is staying at a hotel, stuff to be autographed if applicable, camera, chargers for anything electronic and such. I guess I may have started bringing my Nintendo 3ds with me to cons very recently.

Nintendo DS. Must have. And if you're into that sort of thing, condoms. Lots of guys and girls like to hook up.

Well, I'm unique in that when I attend cons, I'm a Cosplay Repair guy. So I get fully kitted out with equipment and I have things to offer for cosplay repair that even most basic repair kits don't have. So here's what I carry: Many hairpins Wrinkle Releaser Stain Remover Pens and Shout! Stain Remover Wipes EZ-Thread Needles 35 different colors of All-Purpose Mettler Sewing Thread Battery-powered Hot Glue Gun w/ Glue Stick Refills and Energizer Lithium AA Batteries (the only batteries with the high enough voltage to run the glue gun) Loctite Super Glue Control Gel E-6000 Adhesive (The cosplayer's favorite adhesive) Fabric Glue Fabric Tape Black Gorilla Tape Black Duct Tape Red, Green, Blue, Yellow, Black and White electrical tape Clear Gorilla Tape Fashion Tape Assortment of safety pins Adhesive-based Lint Roller Japanese Lint Roller Various Forms of Velcro Sew-On Snaps Folding Sharp Scissors Many AA Batteries for my EL Wire Load-Bearing MOLLE Chest Rig w/ MOLLE Pouches w/ integrated EL Wire (to carry it all) EDC Bag for the last day of the con (I like to call it my "Lightweight Rig") And of course, a hat that says "Cosplay Repair" and business cards with links to my YT channel, Tumblr, etc. So when it comes to cons, I'm heavily kitted out, and you can probably guess I'm very popular among attendees and staff at cons. So that's my crazy list of Con Must-Haves.

Healthy snacks, a portable phone charger, advil and any other medicines, baby hair detangler and a wide tooth comb for long wigs.

Water bottle, pen, sharpie for writing on glossies, small pad, apples(granny smith), protein bars or similar food bars, cash so I don't use my card(could get out of hand on the dealers floor), camera & accessories, business cards, large fleece hoodie for pillow or warmth, bag for swag. If I can remember, snacks to share. Chap-stick, handkerchief, comb, mints. Of course more if I have to travel overnight...