On first glance this Solar-Breeze swimming pool skimmer may look a little like a floating pizza box, but on further examination you’ll find it features solar panels and a skimming tray.  This gadget charges via the sun, stores the energy on an on-board battery and scoots around your pool picking up surface debris including leaves small branches, suntan oil, dust and the occasional bikini top into its removable tray.

Software directs it to areas of greatest sunlight to keep it charging at optimum levels.  Rotating corner bumpers keep it bouncing around the pool. $499 @ solar-breeze.com