Maybe I would buy even multiple and spread them around in my house, so they
can suck in dust 24/7 so that the dust never hits the floor and it hopefully
won't get sucked into my pc too much !

Ofcourse it has to be a little bit low noise, not as loud as a vacuum
cleaner, but still effective enough to suck in dust ! =D

Perhaps it should use the same bags as regular vacuum cleaners so those bags
can be dumped into waste basket when full... but I would also be cool with
plastic bags which can be wrapped around some kind of plastic container,
turn it up side down, wait until all the dust settles in the plastic bag and
then close plastic bag and throw it away, though I suspect that might be a
bit more messy, or simply a container which I take outside and fokking dump
the dust onto the street :P ! =D

Bye,
Skybuck.