Homemade Enclosure Cardboard Clip - Solidoodle 3

I wanted a simple enclosure for my Solidoodle 3, but I didn't want to spend money on plexiglass and magnets, so I made a real simple clip to be used with cardboard or material with similar thickness. Since it is only on the top, it can either swivel up or be removed if you need to access your creations from the sides.

I use 2 per side, but you can use as many as you want.