Donkey makes a workstation cup for bowling balls that has a rubber top edge. Its about the size of the cup on a regular spinner. It can be found at donkee.com/workstation.htm.
They will sell you the bowl from their actual spinner for 11 bucks.. 15 bucks with the rubber ring that keeps the ball from spinning ....there is a minimum $20 order so you will have to throw in an abralon pad too..
I just got the ball cup from the Donkee spinner. It isn't that great.. without the rubber piece it won't hold the ball that well. I thought I could just line the edge with some black tape or some other tacky material.. it won't work.. the cup is way to big without the rubber piece that is supposed to go in it. So with the piece it might be better but I don't know..
I bought some rubber mat that I am going to secure to the inside and see if that works.
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18 mph,350 rpm,PAP 4 3/4 x 1/4 up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
Book Average 220