
Ten ounce cans
Disposable Duster, 10 oz 2-pack
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$13.44$0.67 an ounce of gas
Two standard cans keep one ready on the bench while the other rests in a desk drawer for keyboards and towers.
Sewing machines, model benches, printers, blinds, shelves of figures and the dust that settles on all of it.

A bobbin case and a feed dog collect felted lint faster than anything else on a sewing machine. Short bursts with the straw clear the race without a screwdriver coming out.
Painted figures, model kits and anything with a fragile join are the exact case for moving dust with a stream rather than fingers. Work from further off than you would on a keyboard.
Slatted blinds, lamp shades and return vents hold a surprising amount and resist every cloth ever made. This is the household job people buy a second can for.
Lint under the throat plate builds into a mat that changes the stitch before it ever becomes visible. A pass with the straw every few projects keeps it from getting that far.
Keep the stream off the oiled parts of the machine and off any exposed thread path you have just set. Blowing a threaded machine is a good way to spend ten minutes re-threading it.
Paper sheds, and the dust it sheds is fine and gets everywhere: rollers, sensor windows, the tray. A short pass through an open paper path clears the sensors that cause the mystery jams.
Go gently near a laser printer's toner area. Loose toner is not something to blow around a room, and that part of the machine is better handled with a cloth and a vacuum meant for it.