I started this project when my kids discovered my old toy soldiers in the attic. The recasts are surprisingly cheap if you order Confederates cast in blue or Yankees in grey (the Chinese don't seem to know the difference). I added a few "Armies in Plastic" figures for variety. First I glued fender washers to the base of each figure.
Then put peel and stick magnet sheets on 3"X3" squares and spray painted green.
Each full strength unit gets 12 figures. Figures can be removed as casualties occur.
My first battle will be Bull Run. I will post something in the "Wargaming " forum along with a description of the rules.