If you have a pile of batteries, this gadget from the Giz Wiz is for you. Ohuhu® Battery Storage Case keeps all your spare batteries organized and easy to see. It holds up to 72 batteries with a handy removable battery tester to quickly see if a battery still holds a charge. Hang it on a wall or slide it into a drawer or on a shelf for easy access. It's a nice deal at $10.99 (as of 5/20/17) and Amazon Prime, so free 2-day shipping for Prime Members.