I printed the superb Traction Engine (and it's wagon) by Cabbageheart, mine is a "working engine" so is a little distressed. It is based on the chieftain engine (inspired from 20legend's build make:367492).
I added a few small parts to the engine, a chimney number plate, tool box (next to pressure gauge, scaled down design from Gekon3D, Thing:2134493) and a rope loop on the rear hooks. I also added some decals on the smoke box and boiler.
The wagon was built without the frilly bits and weathered in a vague homage to Fred Dibnah.
To increase the fun I added both smoke and sound to the traction engine, the details are in the attached PDF file.
It is a little tight inside the engine to fit all the extra bits but there is room, by accident the red led on the ESC shows through the top so it looks like you can see inside the firebox.
A short video showing the Engine and Wagon driving around the world!;
This is probably technically not a remix.
Cabbageheart's design is excellent, everything fitted very well.