When you're working hard (and sweating harder), a towel is a must — but, hanging it from exercise equipment can track germs. Plus, if it falls while you're doing cardio, it could cause you to trip. The Friendly Swede Zipper Sweatband Wristband Pocket ($12) not only eliminates the need to carry and track your wallet around the gym, but it removes bulky towels from the equation, too.