The Town Bank:
Difficulty = easy-peasy
This little model was designed for two reasons....one so even the littlest kid (or hopeless adult) could do a model. They don't get any easier to assemble than this.
(We had to draw that silly big money bag on the card just to take up all the leftover space!)
Reason two: The good folk at Blists Hill Open Air Museum, Iron Bridge, England asked us to. It's a real building and it's a real bank but they have funny money in there.