Waterproof First Aid Kit

A Nalgene water bottle makes an inexpensive waterproof first aid kit on shorter trips. To save space, wrap lengths of waterproof adhesive tape around a plastic film canister so you can leave the original package at home. Pack the film canister with a few assorted medications -- trim blister packs or separate pills in small sealed plastic bags -- or whatever else might fit inside. 

It's a bit harder to get things out of this kit, but it's inexpensive and works!

Leslie Dutton