I made these magnet boxes for my boys for Christmas. They are super easy and fun.
-Metal box (I use the gift card boxes that go on sale after christmas)
-Magnet page (Dollar store often has magnet to do list pages that work great for this, or buy a magnet strip in the craft aisle at walmart)
Color inside of the box with permanent marker (scenery or patterns) or keep it plain. Stick stickers to magnet and cut out. Place sticker magnets inside and your done!