I wish I had more games that used one. Right now I have these games with shooter rods: Sharkey's Shootout, Maverick and Rescue 911. Today, in only 15 minutes and for $5, I made a 9 Ball shooter rod for Sharkey's that sells for $25+.
I bought a mini, 1.5", 9 ball from eBay for $5 and I already had a shooter rod with a cracked knob to use. I just wacked the plastic knob against the garage floor a couple of time and the knob broke easily into 3 pieces. I then drilled a 3/8" hole using a spade bit on my drill press, which would be easy to do with a clamp and a hand drill. Then I coated the knurled rod tip with epoxy and lightly tapped the rod into the ball with a rubber mallet.