this tray has a snap-on lid. I first made 1 for vase mode, but due to the long shape, I found it to flimsy and was worried the lid would snap loose. This one is designed to be printed with ASA or similar higher temp material. No supports or brim is needed, I recommend to slice (based on 0.4mm nozzle) with wall loops at 3 (, use outer wall at 0.58 and inner at 0.5, infill at 0%.