Wash your hands

We are  learning how to build a contraption to wash our hands using less water. I know when our contraption is good is when it has soap, uses less water, and  cost no money. So we made a tippy tap. You will need a water container , soap , gravel , nail and a candle, string tools to dig and 2m sicks 2x and 1m 2x. This is our tippy tap