Now when I was a kid I did not have a trainset – you know, one of those Hornsby jobbies with the locomotive, carriages and transformer-powered track:
Not sure if I actually wanted one, but there you go – I had friends who did, right down to the chemical you put a drop of in the smokestack to generate puffs of steam in a (from a kids eye perspective at least) realistic way.
This is a set of folds based on the same box-pleating trick, and really there is little to stop you making a whole swagger of types of carriages using it – I made 3 variations but can imagine more. An interesting cross pleat and collapse was used (in some cases many times) in each model, useful to remember.
Although these are technically separate models, I present them as one as they would, individually, be uninspiring.