For this project you will need: A shower (Duh), and a container of some sort milk jugs are best (don't used what i used in the photo below). And simply hold the container while your shower heats up and voila! you just saved about a gallon of water! this tip is especially useful if you are currently living in the southeast the the drought and what not. You can use this water to water plants, you can purify it somehow and use it for drinking water, the possibilities are endless!