Cohda's amusing Design Filter T takes what many of us do when we don't have a dust mask and makes it honest by printing it on a T-shirt. (The giveaway to this type of behavior is out-of-frame in the photo above: A bare belly covered in sawdust.)
Cohda, by the bye, is a UK-based "Punk Rock Design Company" seeking to foment "Anarchy by Design." Check out their other stuff here.
Other objects we'd like to see them make: The butterknife flathead screwdriver, the sleeve-cuff potholder, and a protrusion on the side of your shoe for manipulating a public toilet seat.