I bought a toy bow and arrow and had a Robin Hood style competition with them shooting the arrows onto a scoreboard I drew in on the board.
We also made cardboard shields and swords. That was good, they loved it.
I did a load of disgusting history like about the plague and things like that, gross food, bad fashion, smelly cities etc, they loved that as well lol.
We made castles from paper cups then catapulted balls at them, but that was just crazy, I don't recommend that.
Plus a ton of history themed board games, risk, chess, checkers and so on.