If you are like me, you will wander around the hardware store looking at tools, and then come up with a project that justifies buying that tool. This is just such an occasion.

We'll be using a hand-riveter to install some rivets to hold the sides together. A riveter will cost you about 12 bucks at the hardware store.

Here, I've drilled 3 holes thru the side and the flap, 1/8" diameter to match the diameter of the rivets.