The Miniature Wargaming Editor 
Within the walls of the Kyiv Pechersk Lavra, the Kiev Monastary of the Caves is the Museum of Microminiatures, a collection of models that are so small and so detailed that they defy belief. For example, there is the rose inside a hair, shown above:
“The hair is drilled lengthwise and polished outside and inside until being transparent. An artificial rose twig is inserted into the bore. The flower diameter is 0.05 millimeters, the stem is 0.005 millimeters thick.”
Column, Line and Square was the first set of Napoleonics rules that I ever played — and I suspect, the first set that many people played. We called it Column, Line and Slaughter, though, becuase slaughter was the usual result.
Still, it was fun to play –especially with 25mm figures.
Sadly, the set is apparently no longer in print. But you can get the rules here, free for the downloading.
Here’s an interesting idea about using an old children’s board book as a base for making terrain. I think there’s lots of other uses for this readily available source of thick cardboard.
GrimDark Racing is a set of simple rules for races in the Warhammer 40K universe. Just use models you already have. There’s plenty of violence, of course.
Scotty’s Wargaming blog has an article on refurbishing old wargames scenery. I’ve got quite a bit that I’ve accumulated over 40 years of gaming that needs touching up.