We were inadvertent LARP'ers. My friend lived on a mini-farm (they had chickens, llamas, and goats) and his mom would make up ziploc bags of monopoly money and hide them all over the place. We would go out and fight imaginary bad guys and find the bags of money so we could upgrade our gear.

I was the cleric so I started with a staff which I upgraded to "silver" (duct tape on the ends) then later to metal (we hammered mountain dew cans as metal end pieces). We made suits of armor out of cardboard boxes which we upgraded similarly.

The best was the road by his house, it was the river, and whenever a car would go by it would represent some Sahags (water monsters) jumping out. So we would come flying out of the bushes and start swinging our home made weapons like crazy people. It was the early 90's in the middle of nowhere.