This is a tray for a Messy Cats saucer / bowl (found on Amazon).
I didn't buy the non-slip base and the bowl kept getting pushed around the floor by my dog. Maybe I'm just crazy for letting my dog eat from a cat bowl. I added some hot glue to the bottom (where the hex pattern is left filled in) to add some friction and prevent slippage.
Nothing special, but I thought I'd upload it in the odd case that it helps someone else. This is my first self-designed print, and I'm not much of a DIY guy... The code is terrible, but the print turned out pretty good.
The author hasn't provided the model origin yet.