Yes. I keep a collection of things like miniature clothespins, alligator clips, etc., to grab the smallest protuberance on a part. If there is nothing at all to grab onto, I have to paint the part it two sessions. Thus I group parts of one color, do them all in one or two airbrush sessions.
For some small parts I take a stick of scrap wood, and apply a strip of double-sided sticky tape. I put a bunch of parts on that and spray one side. When dry I remove them, replace the tape, and do the other side.