Some of the teens at our church are participating in a "Rock'A'Thon". For charitable donations they will rock in a rocking chair for ten straight hours! Another kid at church, one of the Cherubim, hit me up for $20 for a Jump 'A 'Thon where she was going to jump rope for some prodigious amount of time. Last year, the kid across the street was going to do a thousand karate kicks for charity.
Why do these things always involve some senseless activity that benefits nobody? I'd definitely give to a Rake' A 'Thon, and I'd even supply the leaves!