While cleaning out my PC, I emptied my last can of air duster but wasn't finished. Didn't know what else to do, so I grabbed one of those cheap plastic foot pumps that came with my inflatable exercise ball. Surprisingly, it did a pretty decent of cleaning! I was even able to get some better pressure by capping the tip with the end of a click pen. But it wasn't very ergonomic to use for a long time. Would there be a problem with static like I've heard when using a vacuum hose? I thought this wouldn't generate enough airflow but wasn't sure.

I got to wondering: there has to be a better way then using these canned dusters - both better for your wallet and the environment.

I did some searching around. Most people who don't use the canned dusters use some kind of air compressor, but that has its own issues: usually big and noisy plus they can be expensive. Good for large scale cleaning but seems too much for the occasional single PC box cleaning.

Are there any alternatives to these? I know there are refillable air cans, but most reviews said these weren't really worth it because they ran out too fast.