I rebuilt 60052 into a different train with different cargo and vehicles, using only parts from the original set (excluding extras). I'll share the instructions at some point, and maybe try another
LEGO MOC Dressed-up 60052 Cargo Train Engine by timeremembered | Rebrickable - Build with LEGO
Sometimes, I like to take an official LEGO set and ignore the instructions to see what I can come up with. Here's a steam locomotive made of some parts in 60052. :