I made these refrigerator magnets a few years ago after I saw them on Knitting Iris. Love these so much! You can find the little boxes of Necco conversation hearts just about everywhere this time of year. I trim the front and back panels of the box so that the magnet is flat, and use double-sided tape to secure the front piece to the back. I put adhesive magnetic tape on the back. If you are giving these to a grandparent or someone else, you can fill in the "to" and "from" fields on the back.
Last year I bought 20 boxes of conversation hearts and had all the kids in my daughter's class make magnets for their parents. The teachers always have little ID photos of the kids, so we used those photos. We used the candy hearts to play games. Who could make the tallest stack of candy hearts in one minute? Who could pick the most candy hearts out of bowl in one minute using chopsticks? After so many little fingers handle the candy, you beg the kids not to eat any, but some of them always do.
(An aside: I feel like my camera has not been the same since I had it in Niagara Falls last summer. I think the lens needs to be cleaned. What is the best way to do that? Should I take it to a camera shop or attempt to do it myself?)