Nevermind the big Hoover, Dyson or other whole house vacuum cleaners, what someone needs to invent is a small/micro version to use in small areas like say inside computers, around your media equipment, etc. You won't believe how dusty it gets in Arizona, even in a house where we don't open windows or such, and a whole house electrostatic filtration system (like the Shaper Image Quadras but built into the ventilation system).
It could be just as simple as a much more flexible and small attachment to a regular house vacuum. The attachment should be small enough to fit my palm but the hose needs to be long enough to reach all the crevices and such.
(Guess what I'm doing today)