For indoor usage of any pot, an appropriate Drip Tray is imperative. A5 , B4, and C3 are my Pot Tower designs. 450mm Dia. x 600mm height. It's quite large size. So drip tray size : 450mm Dia x 25mm height. for printing it on Ender 3 S1 Pro, I made the following interesting designs. Check it out.