Good ol' pinterest helped me finally use my beloved washi tape. I have had some of these rolls for 3 years. untouched. And the pretty red ones my friend Danni sent me from Thailand! But I loved them so much that no project seemed worthy of their use. Until I saw and pinned this. And last night I had 40 minutes of free time which I hadn't planned anything for, so I made them....
Adhesive Magnet strips (or other magnet backing found at craft stores) (OR if you want to be cheap, or recycle, you can use those free magnets you get from sales people! you would just need to glue the white paper on top to cover the ad.)
white paper if your magnet is black and not coated with white already.