Great Cheap Idea! Homemade Bowling

Just need:
10 water bottles, white paint, black paint, couple paint brushes, and a random ball.

I took 10 empty water bottles filled each with about 1 inch water. I am sure you could use rice or sand. I painted bottles white. 2 coats. then after dry added 2 black stripes around each bottle towards the top. Let Dry. and PLAY. hahaha my 4 year old was dying to play bowling, but just didnt have the money to. so I thought we could still have fun and save $. He got 7 pins on first couple tries and I got 2 pins on my first couple tries... wow what just happened. lol  ball can be baseball, air filled ball or whatever just not too heavy or too light... =D