A Roomba for your desk, sort of
Unfortunately, it doesn't maneuver automatically.
We don't know if the (mis)spelling is intentional, but here's the Robo Vacum, a desktop vacuum cleaner for your workspace. Unfortunately, this cute little thing doesn't maneuver around by itself. You press its button on its head, then aim it for the crumbs left from your Subway sandwich.
Not quite a Roomba, but that's all right since you wouldn't want something automated to fall off your table and make a mess on the carpet anyway. Our only gripe: It uses two AA batteries and not the USB ports for power.
(Source: Crave Asia)