Hi Susan! I'm pretty sure Kenneth is still collecting clothing for his program.
For other alternatives, here are a couple of donation sources I know of in CA. I'm sure other folks will know places elsewhere in the US (or abroad).
Trips for Kids -- sells new, used, blems, etc in their thrift shop (the Recyclery) to fund their mountain bike programs for at-risk kids in SF. TFK is run by Marilyn Price (Jefferson Award, Mountain Bike Hall of Fame, etc). I volunteer as a trip volunteer and have run special girls camps, too! It's a very worthy group.
NorCal High School Mountain Bike League -- collect used clothing & gear in the annual "Lycra Drive" to be distributed to new high school teams and riders.