Yes all the time, nd i usually create stories around each one and when i git inspired sometimes i create a whole story with all of them or at least with some of them and its really funny. You should try it ;)
if I like the drawing and can think up an Idea around them then ya, usually the ones I name become characters for my webcomics or just ideas I leave in my portfolio for later.one of the ones I used later was Helix. right now he has his own webcomic, and is in my other comic.