Firefly Outgunned is a set of free wargames rules for WWII microarmor. They’re based on the old Firefly and Challenger rules sets.
Wild West Paper Buildings
Shadowwolf offers a nice set of paper models of Wild West buildings.
Minimal Melee Combat
Minimal Melee Combat is a set of free wargames rules designed to depict combat between sword armed adversaries.
A Fistful of Sardaukar Dune Miniatures Game
A Fistful of Sardaukar is a set of free wargames rules for battles in the Dune universe of Frank Herbert.