Cleaning:
Personally I like a leaf blower. I open the garage door and plug in my Toro blower and in seconds everything that was laying on and cluttering the garage floor is out in the driveway. I walk around and pick up the useful stuff and let nature have the rest.
Occasionally I'll find something like a 10mm socket or that stainless steel washer I dropped a couple of days ago and coundn't find. But mostrly it's just dust, metal shavings, snippets of cardboard I'd used for a template, a beer bottle cap, discarded wire insulation and those annoying little molten balls that I snip off the end of the wire from my MIG welder. If the wind doesn't take the mess away I'll blow it into the steet and the end of the drive and eventually the county street sweeper will come by and suck it up.
Speaking of things dropped and you can't find them. Where do those things go? I mean, really, you drop it, it falls right at your feet, you look down...and it's gone. Why is it when you drop something it can't simply fall and lay where it's visible? What natural law dictates that it ends up under something or behind something ten feet from where it dropped? I use an old trick sometimes. I lay my face down against the garage floor and start searching. You'd be surprised how many times that little nut, bolt, screw or small part becomes obvious when you sight along the floor and ant level.
Then you go in the house and your wife asks, "What's all over your face? Looks like you've been laying on the floor."
Tom