Towel

This is a pet peeve of mine. You are much better off with a small, regular-weight bath towel than with one of those miserable little “travel towels” that soak up about as much water as a tissue and shed like a sheep dog. Sew a couple of solid cloth loops (old belt loops work well) to your towel so you can hang it from your backpack and let it dry while you’re on the move.