Over the years I have found that one of the easiest things to draw is people on planes. They can't go anywhere and they have a very limited range of movement making them perfect subjects for quick sketches.
Barry Keller is an artist, writer, programmer, creator, thinker, lover. Some day I will have some of this mastered. Well, one can hope. If I never master any of this, at least I will have had the pleasure of trying.