Cheap invention for displaying Pez: pick up some of those plastic report binder bars (remember the clear covers from high school with the slip-on spine?) and cut a strip of thin cardboard (cereal boxes work great!) as long as the strip is 2" wide (they twist and pop out without the added support), then slip the 'feet' into the track. It works great... they don't fall over if you bump the shelf, you can pick them up and move them. Found the bars in bulk on Amazon