Do you have a dollar tree or Dollar General?
They have those clear stones in the floral isle. I think there is 20 in a bag or so.
You print out ANY design on paper and cut them out in 1 inch circles, you can get a 1 inch circle punch at most craft stores.
Use Mod Podge to attach the paper and a pin or a magnet.
They are FAST and look AMAZING.
Email me if you need me to send you a pic or a template for the images.