PillFan

This design accepts two of those small (6mm +/-) motors you find in pocket drones. They are staggered in design to allow them to fit inside a prescription pill bottle. I made this to use as an extractor when I'm doing a lot of soldering. One of the larger bottles leaves plenty of room for a DIY filter.

It blows pretty hard so this would work well as a pocket fan. The vacuum it creates it pretty decent. Enough to pick up the cap for the bottle.