Needed to lift my couch a bit to allow clearance for my roomba to get under. The couch is from Ashley's Furniture, but I'm sure there are other couches with similar triangular legs that this would work on!
160mm x 160mm x 36mm but can scale to fit couch legs.
5mm walls
40% infill for strength, but lowered a couple to 20% to test and they seem to be holding up fine!
The author marked this model as their own original creation.