One thought: you could just buy a cheap air compressor from harbor freight on a holiday sale and blowing out your case once a blue moon.
Or buy a good air compressor you can later use to build a fence around your backyard, or a new deck, or use to paint your house, or put down a new roof. I guarantee the very first time you use that compressor to fill up a flat tire so you can limp down to the nearest tire shop, you will be glad you did.
FTR, I've been using an air compressor to clean out electronics since my very first job as a tech back in the early 70's.
HOWEVER - the compressing process
WILL create condensation inside the tank. The compressor also draws in unfiltered air into the tank - unfiltered air that may contain all sorts of dust and other contaminants. The condensation collects on the walls of the tank, then runs down to the bottom and mixes with the dust, smoke particles and whatever else was in the air. If the pool of contaminated water is allowed to build up, nasty, rusty water particles can be spewed onto your electronics - never good. So periodic draining is required and all air compressors have a petcock valve on the bottom of the tank for this purpose.
ALWAYS - as in EVERY SINGLE TIME - use a
inline moisture and particulate filter with your air compressor when cleaning electronics (or air-brush painting birthday cakes or faces).
Never see how fast you can make a fan spin - you can easily exceed design limits and damage or even destroy the bearings (I use wooden glue/Popsicle sticks to hold the blades stationary).
Either way, please! Do it outside. No need to blast that heat-trapping dust, dander, microscopic critters that eat that dander, and the microscopic "stuff" those critters "excrete"
back into your room, computer, nose, eyes or lungs.
