In the past few years, we have covered plenty of awesome Stirling engines here. This Steampunk Power Plant Stirling Engine is also worth a look. It has 130+ parts and sits on a wooden base. The Bohm Stirling HB5 Power Plant not only puts on a show on its own but can drive other machines such as a Ferris Wheel.
This engine model is operated with methylated spirit. It needs to cool down after 15 minutes of use. The above video shows it in action.