I figured something made of glass would be better, and coincidentally in Bio class I noticed the glass eye droppers. I'm thinking of getting a few to use instead because I'll be able to rinse and reuse them.
That should do quite well for all liquid solvents without thickeners. You probably won't have to worry about rinsing, since most such solvents evaporate clean.
Anything with fillers or plastic already dissolved in it will leave those behind, and you may need a clear version of the same solvent(s) to clean it. For those I prefer something like disposable brushes, which I sometimes see 10-to-20 to the pack at the dollar store, or popsicle sticks, which are even cheaper, and easily carved to a finer point if needed.