Vacuum-bag dust houses sculpted by former house-cleaner Cory Doctorow: 
Maria Adelaida Lopez, a Colombian-born artist, covers doll-houses with vacuum-cleaner lint in tribute to her days working as a house-cleaner while taking her Master's in Philiadelphia, and in tribute to the "other Marias" who still clean house. She collects full vacuum bags from others to continue with her art. Link, Link to artist's site (via Geisha Asobi)
