Photo by: makezine.com

It took a rocket engineer to figure this one out…but, in all actuality, it is painfully simple! This is an easy to make solar energy system for your pool. You start with hula hoops…yup, hula hoops are the key to harnessing the sun’s energy in this borderline genius idea.

See more photos and details at makezine.com here…

How To Make Lily Pad Warmers