As kids, we learned tons about building stuff with Lego and K’NEX, and it’s high time we put that knowledge to use in the real world. The Ply90 bracket is a super simple way to solidly (and reversibly) connect two pieces of plywood at a 90 degree angle, letting you build just about anything with just an allen wrench, some planks, and, if necessary, a saw. The only limit is your imagination. Oh, and the size of your wallet.

Go to Kickstarter to pledge – 45$+ (4 brackets). [Source]