Print Bed Stand

I have several mirrors and 2 pieces of glass that I use for my printers. It's a bit of a pain finding somewhere to easily store them so I've created this stand so that they're easily accessible. There are 4 slots for 4mm beds and 4 slots for 5mm.

The dimensions of the stand are:
150mm long x 52mm wide x 50mm high

There was also a lot of blank real estate on the sides, so I threw in a dragon, because everything is cooler with dragons. I've uploaded both versions so if you're a dragon hater you can use that one and be lame ;)

Update...already
So I quickly realized that the balance would be off and it would tip over, so I've added storage trays to both sides to keep it balanced.

Update #2
So after printing out the test piece, the slots weren't wide enough for my bed surfaces. I've extended them each by 1mm so 4 of them are now 4mm wide and 4 are 5mm wide. Depending on the tolerances of your printer you may get better spacing than me.