We're not sure when this will be available, or indeed how much it will cost, but thought you might enjoy a preview of this Wii bowling ball, presumably heading to a Ninty console near you soon.
Made by CTA Digital who beg "never, ever release the ball!" among the myriad of disclaimers on the product page, the Wiimote fits inside the ball (it opens in half) for an "ultra-realistic" bowling experience.
Could you Wii "bowl" with a ball and not let go?
"CTA Digital, Inc. will NOT be liable for any damage to your TV, home appliances, and/or accidents caused by these accessories..."