I Guess you could file this under gear failures, or brain failure. I left my headlamp at a Motel in Long Lake. I carry a multi tool with a compass, safety whistle and small led light. Not ideal but a few things you always need to have a backup for, water treatment, socks, and light! Lets hope I don’t need to scare off any bears with my little LED light!
Every trip has its gear failures. So far I’ve suffered a broken water filter bag, critical but I always carry treatment tablets for backup and I have a rescue replacement on the way. I have also had several tears in my packs outer pouch. I’ve used safety pins and tried my hand at sewing with a tent repair kit. Pathetic attempt at sewing but only needs to hold a couple of weeks at most.