Thanks, I am looking for stands in general and not just for gameboy but I was not able to find good stands for the most of the consoles I haveThose are just simple plexiglass stands, custom-made for the display. Most likely non-working micros glued onto them.
If you really want one, this is pretty much how you do it:
https://www.youtube.com/watch?v=3M4Zo9XKAAM