Back when I was a kid, we had Ninja mail order magazines (no really!)...
We purchases some things from the magazine. Back then they had this thing called COD... As 8 years old, we'd get our christmas money and order. Must have been funny taking our calls. We purchased a few Ninja Stars (thats what we called them), and we had throwing spikes.
I remember when we got the throwing spikes (they were basically iron pencils made to be sharp and fly straight) we found a this piece of styrofoam about 6 inchs thick or so, and about 4x4 feet. We didn't have anybody to hold it up, so I'd sit behind it while the other kid would throw at it. Long story short, I had a throwing spike stuck about an inch into my thigh...
Oh, and we'd have a blow gun. We found out if you had a certain plastic tube, one from a tent I believe. A certain thing product called a thumb tack, it would fit perfectly. We could blow the thing about 100 feet with our blow gun. That made for interesting times.