I think I may have seen this idea on pinterest only they used baby food jars to store the paint. Since I couldn't find my stash of baby food jars I used some mason jars that I scored for only $2.95 for 12. I actually like the mason jars better because they are cuter and hold a bit more paint.
I filled each jar with the paints that we have used in the house so when I need a quick touch up I can just grab the needed color from the cabinet and get to touching up. I then made little labels for the top to identify which room the paint goes with. So easy and now I don't have to trek out to the garage the next time I need a dab of paint.