After I saw this link:
I rushed out to make mine! The puzzles were a dollar at Goodwill and the letters and the spray paint were from JoAnn. I hard coated mine w/ Modge Podge and hot glued magnets to the back side. These make really good gifts for little kids!
I spray painted the box the puzzle came in and took paper w/ trains on it and cut the trains out in strips. Glued the train strips to the box and then hard coated the box. It made a nice container for the magnet letters! The whole set makes nice gifts for little kids.
I made some animals magnets, too!
she loves them!