It's common to come across artwork or mirrors that are missing the necessary hardware to make hanging easy. There are a few options — like those little alligator teeth pieces to nail into your work — but many of the over-the-counter solutions provide very little flexibility. Who knew a simple pop tab was all you needed? Genius!
The folks over at Make are so smart sometimes it hurts. This is just another one of those times as this repurposed pop tab idea is sheer brilliance. I've had many custom art pieces that aren't mounted in a traditional frame and hanging them can be quite a chore. Those little alligator teeth never really hold up and you're rather limited with easily accessible hardware you can use to hang it.
Using a pop tab from a used soda can would be ideal (and inexpensive!), just as long as you remove it with the ring in tact. Hop over to Make for a tutorial on removing the tab perfectly each time and read more on this great how to project!