You may have seen BT post this video recently (this is actually on a secret link on my channel as they only posted it to Facebook, so don't share it around please - keep it to RMWebbers only), which features a little OO gauge train at 47 seconds...   I produced this video (well, most of it - the neon VFX and super-fast pacing were done after I had finished on the project, the last edit I worked on had a slower pace and showed the ball traversing the house in a more honest way