In researching tools for the 19th century I came across two websites that I found very helpful.
Dalziel Barn, a Pennsylvania style barn in Ontario, Canada. Their website is chock full of interesting data on life for early and mid 19th century farms, architecture, tools and life.
I had always wanted to try some figure wargaming where the ground scale was the same as the figure scale. Once I did build a small european town in 1:700 scale and scratchbuilt some 1:700 scale armor vehicles to try some WWII gaming, but never did complete the project. I still have the kits from this and may go back to it a some point.