I obviously did not invent this project. I actually learned it at friends house probably 8 years ago.
This is a fun and easy recycling project. In my family we can alot during the late summer and fall. So, I collect all of the canning lids after using our home canned food. I have a box of lids to craft with.
Front. The sky is the limit. You could glue just about anything to the front of a canning lid.
Back. I bought a roll of magnet a long time ago. I just cut pieces off the roll and hot glue the magnet to the back of the lid.
My favorite glue for these magnets is Aleene's tacky glue and hot glue.