This is genius! The Magic Glove concept by designer Christian Sallustro is a small Dustbuster sized vacuum that straps onto to your hand.
You wear a specialized glove which can be used for dusting while the vacuum “nozzle” sits on the palm of your hand with the mechanical portion of the vacuum around your wrist.
I don’t know if it would really let you get in tighter spaces than a hose would but the portability factor on this is huge. It seems like it would be best suited for making big sweeping motions across large flat surfaces like tables or desks. Alas, it’s just a concept.