Lily Pad Pool Warmers Home By Edward HujsakEdward HujsakView more articles by Edward Hujsak July 27th, 2010 Use hula hoops to heat your swimming pool using the sun. Tagged MAKE 23 By Edward HujsakEdward HujsakView more articles by Edward Hujsak Discuss this article with the rest of the community on our Discord server! ADVERTISEMENT Subscribe now to Make: MagazineThe official magazine of Maker Faire Related Articles from Make: From the Shed: New ArrivalsOrion Watch$129.00Bottlehead Crack 1.1 OTL Headphone Amplifier Kit$375.00Bottlehead SEX 4 Kit for Headphones & Speakers$885.00 Get Make: Magazine $19.99