Leaf blower? They don't sell canned air in St Louis? You could fly your drone into store to see who has it in stock! Geeze you work in IT. Steal a can from work!

Actually I use a vacuum cleaner with a wide snorkel first. I'd rather suck the dirt out than blow it into my own face. Then the canned air. I do have an air compressor but I wouldn't shoot 90 psi into a computer case.

I DO enjoy spinning the fans up with the air and making the "whoop whoop WHOOOO" noise like in the cartoons when somebody slips on the ice.