I bought a cheap ASDA hand held vac, and i keep it under the piggy cage then just give it a quick spruce up every now and then if the pigs are lucky twice a day, if not then just the once.
I also keep like gel air fresheners in the room so it doesn't smell bad, these aren't harmful to piggies (as long as they can't reach them) because they don't spray out anything nasty !
Also brought a lovely rubber pet hair remover brush which is amazing, best thing i ever bought which keeps hair off the fleece and off your clothes too.