I have some angled feet in the Living room's couch and the robot kept bumping into those, leaving some big marks on the top, so here is a bumper in order to prevent those scratches.

My recommandation is to slide each bumper through the sides, and it should cover it nicely.

The model in the image has a gap in the middle, because of an update I did not complete printing yet (but it is 100% functional), but the file I uploaded is final and does not have the gap. I made one of the gaps a bit bigger so it doesn't cover the side sensors.

Feel free to change any settings but I would recommend to have the Support as Tree, and also on build plate only (otherwise it is kind of difficult to remove the support from the bottom part of the model).