Brigii Y120 PRO Mini Vacuum Cleaner

Yes. it's very good. It has a special attachment (that short
one in the photo) just for vacuum bags and for blowing up
balls, camp beds, etc.

To a computer, wall receptacle made for USB, or an ac/dc
plug converter to USB, like most cell phone chargers.

It would be easy to suck dust and lint if the machine reach
the place, we would recommend you can try it with brush
one.

It‘s a good choice,this vacuum is designed for the cleaning of small areas.

Probably not. This is meant for small chores, like keeping your desk clean. I would go with a true dust vac or canister vac for your situation.