Have you ever heard of an arcade game called Planko? Well if you haven't, its a game were you drop a coin into the top, the coin hits pegs, and lands in a slot that will either reward you, or give you nothing. I built this game in minecraft using stairs for pegs, as items bounce off of stairs!

If you just want to try it out, or place it into you server, you will have to download the world, and copy it from there... Unfortunately I was unable to load the schematic from my schematics file... It says,
"(schematic) - File extension not supported"

Have fun!