My kids and I like to look at stuff under a cheap microscope we got on AliExpress. Dead bugs, cool seeds, feathers, that sort of thing. We store the stuff we collect in petri dishes, which have been loose on my desk for a while. I was starting to get worried about the tower of goodies tipping over and spilling, though, so I made this holder to keep them stacked nicely. It holds six petri dishes. The red tips are just because the spool ran out of filament right near the end of the print. I think it looks cool that way, though.