The Insomniac reading circle featured a short feature in the Atlantic for June about the Wiffle Ball, still made in Connecticut and still a small family business. K. thinks he must have had one of the first batch, in 1954. Now we know that there's a United States Perforated Plastic Baseball Association, enjoying use of the wiffle.net domain, which the trademark-holders have evidently neglected to secure, but obviously required to use "perforated plastic baseball" as the generic term, again for trademark reasons, I bet.