I wasn't biking, but i went to a lil music festival, and i forgot a mess kit / metal pot (to boil water for coffee). Just cut the top off an aluminum pint can, and that was enough to make it happen. (My campstove is very small.)What's something that you wish you had brought on your last bike tour but forgot to bring?
Alternatively, what's something you've brought along that you wish you hadn't?