A small pressurized aerosol airfreshiner as already exists, but with the notible exception of the top. As the dispenser, there is a special top which slowly leaks the freshener out into the air while passing through a small air motor turing a fan to distribute it around the room. No batteries. No plug.-- bleh, Oct 07 2007 Appologies if this is poorly thought out. I'm tired.-- bleh, Oct 07 2007 You could use the spinning motor like a turbine and claim a USB power supply.-- reclaimbozeman, Nov 24 2010 more inclined to believe "I'm tired". If you have a fan then you don't need an aerosol, any solid or liquid will do, in which case quite baked. [mfd] baked.-- FlyingToaster, Nov 24 2010 random, halfbakery