Do not throw your towel in the laundry bin after only one shower. Hang it up to dry and reuse it to save a little money, water, energy, and time.

This one is simple and saves you a little effort and money. You are clean when you get out of the shower, so there is no need to throw your towel in the laundry bin just yet. Hang your towel back up to dry before you shower again. Reusing your still clean towel reduces the amount of laundry you need to do. That saves you a little money, water, energy, and time.