Here is another cool clock that puts on a show as it keeps track of the time. The Baumann Buco 1880 Swiss Flying Pendulum Clock has a metal ball on a string that wraps around one post, then unwinds before repeating on the other post. It can be mounted to any wall and has a lightweight design.
This clock has a very similar flying pendulum escapement mechanism to Ignatz clocks. It is rare but you can find it on eBay.