But to buy your own they're just too darn expensive.
So I decided to make one. It uses golf balls and has no electronics whatsoever (by design). It has an automatic ball return system which places the balls in separate lanes to indicate each ball's score, which is visible through a plexiglass window at the bottom of the ramp. A ball-drop lever is pulled to release the balls back into a storage compartment at the front of the game.
This was a fun and challenging project. The finished size is 86 inches long, 17 1/2 inches wide, and about 49 inches tall. It weighs a lot, and is awkward to move. I'm not sure exactly where we're going to put it. I should have thought of that before I made it...
Step 1: Basic plans
The entire structure is designed to accommodate the size of a golf ball. The plan I laid out uses two 49" by 97" sheets of MDF (one 1/2" thick and the other 3/4").
I also used some 1/4" MDF, a few pieces of PVC, an old plastic mudflap, a piece of used plexiglass, and a handful of other little things.
These photos are of the plans that I sketched out. Many things changed as the project progressed, but you can get an idea where it all started.