When I was a young I got a bag full of 3/4 PVC pipe cut to different lengths with a bunch of fittings for my birthday. It was such a cool gift! As a dad, I could not wait until I was able to do the same for my son. It only cost about $30 to get 20 feet of pipe, pack of 90^, pack of 45^, pack of Ts, 3 sprinkler heads, 2 3/4 valves, and a few other bits.
Joshua called it “Sprinkler Machine”