Magnetic Printer Paper
This is a simple but cool product, magnetic printer paper. You can use it in a regular inkjet printer and then stick the results to any metallic object.
It’s great for photos and if your life long dream was to make your own cartoon fridge magnets now you can.
Magnetic paper is available from ic innovations for £9.99 or $14.99 for 5 sheets (hmmm another example of somewhat unfair UK pricing).