The Battery Organizer Storage Case is an ingenious, briefcase-like organizational tool that can house up to 180 batteries at a time. The case can be mounted on a wall or tucked away in a drawer or closet for easy and convenient storage and it has compartments for even the most obscure battery types. It’s made of strong, durable plastic to keep everything safe and is clear so you can see everything inside without even opening it up. Plus, there’s a tester feature that allows you to simply place the battery against it to see if it’s still able to power up your devices. Typically, the case sells for $30, but it’s on sale ahead of Memorial Day weekend for just $22. To buy: $22 (was $30); amazon.com.