>>10362209Apparently little green army men have some table top wargame rules somewhere. I'd really like to try that one day.
There's also another game called Gaslands I believe where you just take some typical hot wheels cars and use them for a mad max styled race/skirmish. People do all sorts of cool stuff to make the cars look more the part too.
Don't know any other games off the top of my head that use toys for game pieces. I guess you could also use various toys are standins for table top RPGs and whatnot.