Duct tape can solve hundreds of different camping dilemmas. It can patch holes in sleeping bags, tents, and tarps. You can use it to shield blisters or even make a temporary sling or cast in case of injuries. Tightly seal packages of food before bed to keep smells from tempting nearby wildlife. Twist it into a makeshift rope. Hang a couple of pieces sticky side out near your food to trap flying insects. Use them to mark a trail when you're out hiking so you don't get lost, but please be sure to collect them on your way back. That roll of sticky gray goodness will be one of the most useful things you pack.
