I wanted a moving skeleton tightrope walker for this year's circus themed display but couldn't figure out how to do it. So, instead, I'm going with a roof walker (although I might be able to make it look like it's on a tightrope). I've done enough to know that the mechanics can work, but now I need to work on appearance. I'd really like an active or passive way to make the legs look like they're moving--suggestions welcome. Side note: The skeleton will run at night and will be lit with blacklight.