My tiny collection are put away in bags (SM 57) or boxes save an RB Reslo ribbon that sits on a small (gitamp height) stand with Sowter 1:4 traff in a die-cast box to lift the 30Ohm output. That has a poly bag over it to keep out dust and 'tramp iron'.
DON'T! Get yer Dyson anywhere near a ribbon! In any case, ribbons always used to be stored with the element vertical? This might no matter with modern ones?
Electrostatic 'Hoover'? Typical spook juiced capacitor mic runs the capsule at 60V, many much less. That would not cause the hair on a flea's bum to rise leave alone suck dust off the floor! Anyway, they ain't left powered up??!
Of course, if you have a big, busy studio it makes sense to put away anything not immediately needed, most mics slide handily into a pocket or gigbag!
Dave.