[mmuro]

Good luck getting underneath furniture or cabinet overhangs!

[humblepie]

It would be amazing if a panel on its side opens and out comes a baby robot for cleaning under smaller spaces.

[ctdonath]

I'm more concerned about stairs.

[masklinn]

Basic roombas handle stairs and overhangs, you just need a very basic IR rangefinder on the circumference, if a finder or two "loses ground" there's probably a hole, treat as a wall.