While perusing Pinterest the other day, I came across this tutorial for tiny polaroid magnets. Um, yes. Awesome. So today I made like 100. Go to the link for the tutorial! It's awesome.
Tips? Don't make 100. For starters, it takes a long time and also, it looks stupid to cover your entire fridge with them. Also, if you use thin enough cardboard, you can use scissors instead of an xacto knife and it will save you a couple hours. Go make some! (Or come take some of mine. I made too many.)