Jean they are on 2" tiles from Home Depot. They were 30 for $2.36. I just printed off the graphics and laminated them and stuck them on the tiles. you need a 1" magnet (Home Depot) hot glued to the magnet.
Those are great! I hope you don't mind another question. Do you laminate both sides and what do you use to stick them to the tile? I've always wondered, as when I've tried and used Modge podge, they never turn out. They wrinkle. Thanks for any help. Kathy