A League of Ordinary Gamers has sets of paper counters for Warmaster armies including: New Kingdom Egyptians, Assyrians, Brettonian, Chaos, Dark Elves, Dwarf, Empire, High Elf, Lizardmen, Orcs, Skaven, Undead, Vampire Counts, and Wood Elves.
Paper counters are a good, quick and reasonably cheap way of trying out a system.
Timeline 300 is a set of steam-punkish rules for a now-defunct line of miniatures. The rules, though, can be applied to other figures.
I’ve been painting some English Civil War armies in 28mm, and found this page a useful reference for coat colors.
Hail of Fire is a set of pay-what-you-want wargames rules for company level games in World War II. The authors write.
“Hail Of Fire” is a company-level, WWII themed miniatures war game designed to be both simple and easy to learn while keeping both players engaged in the action! And best of all, the rules are only few pages long! So print out the PDF, throw some models on the table, and jump right into an exciting tabletop brawl!
Using a fast, interactive turn sequence, players are always in the fight. The addition of hidden action points, fast and easy deployment, and a delayed combat resolution system ensures that both commanders will be fighting the friction and fog of war as much as they are each other!
The Santa Cruz Wargamer has a terrific post on making box dioramas from old school Warhammer miniatures. They’ve inspired me to try it myself. I have a lot of Oldhammer miniatures around.