What is your best/favorite prep or survival item, kit, or gear that is worth <$100? It may be something you've put away for a disaster, or something you use on a daily basis, which would become very valuable after "the event." Feel free to interpret "best" and "favorite" as you please: most useful, most durable, most comforting, wouldn't want to live without it, etc. I'm mostly interested in what modestly-priced items people feel they've invested the best, and what they'd recommend to others. Looking for durable goods, not philosophical perspectives. If it's a bunch of little things, then tally them up until they're worth $100. Maybe for you it would be 10 bottles of vodka. Whatever.