This 111 mm square slotted tray has a lip all the way around to keep items contained. It is also elevated off the surface except for the four corners. Definitely needs supports to print. My pictures show the model printed at .25 mm layer height in marble PLA.

UPDATE 4/9/2023

I created a new version that also has a removable catch tray below to catch any liquids that go through the slotted tray. There are 4 pin features on the catch tray that engage with the top piece to align them during use. When assembled, there is a 1 mm gap between trays.