A chronic pipe smoker constantly belching forth pungent plumes of camel-scented latakia, char and greasy tobacco detritus, the only way my work desk stays clean is by the small armada of battery-powered toy robots who constantly whir away to Humbert's alarm, making sure my workspace does not become a sooty, carcinogenic metaphor for the inside of my lungs.
This, for me, is one of the best things about living in the 21st century... but robot vacuums are nothing new. Check out this awesome Tomy Dustbot from 1985. Not only did it have edge sensors, it even carries around its own dustpan and broom! Fuck you, Roomba!
Tomy Dustbot [The Old Robots]