comments:
I've started using a rag wrapped over a silicone wiper for getting into 90-degree areas, then these clean room swabs (lots of brands/sizes/options/styles available) for holes/openings. They're a far superior option to Q-Tips for various tinkering projects. They're all kinds of useful and don't fall apart when they get wet like the cotton/cardboard construction of Q-Tips. Some of my most frequent use-cases for them: precision flux application for soldering (why I originally got them, since they don't leave cotton like Q-Tips) applying CA/super glue to 3D prints getting grease into hard to reach areas of my RCs/Drones cleaning the numerous tiny crevices on my motorcycles, getting the air vents in my car spot dabbing bleach on certain fabric stains