Shop vac. At work I expand foamed plastic beads. It gets everywhere. Most folks in production use air to blow it out in the aisles and we have a ride-on sweeper. I work R&D and my equipment and areas are much smaller. I am always shop-vaccing the floor.
At home, I just do the same thing. I shop vac the floor all the time. I have terrible allergies and the dust from a broom or blowing with air kills me. I love my shop vac.
Because of my constant heavy use, I'll tell you, the best shop vacs (OK, reminded of the hot water heater thread, I should call it a wet/dry vac....), so, the best shop vac is the Rigid 16 gallon. I've had Shop Vac brand, Craftsman brand, the Lowes vac, many different vacs at work. Most of them lasted months before they stopped working. We finally bought the Rigid and use them for years (I vacuum out plastic beads from our large net bags that hold materials when I am doing cleanouts changing product. I may be running the shopvac for over an hour straight.) The only problem we've had with the Rigid vacs are the switch and the plug both get hot with hours of constant operation and we replace them with heavier duty plugs and switches.
Our extrusion production department have 16 gallon Rigid vacs connected up to the screeners that screen out under and over sized pellets and they run continuous for hours on end. We could never do that until we bought the Rigid vacs. All other vacs would last mere days.
Disclaimer, I am in no way affiliated with Rigid. As a matter of fact, my wife works for Lowes. Even so, everything I buy, I pretty much buy at Home Depot, LOL.