The San Francisco Bicycle Coalition will collect your used bicycle gloves at the SFBC Service Station at Cesar Chavez and Valencia St. for donation to the Department of Public Health for use in clinics and senior centers for wheelchair and walker users. It's okay if the fingers are frayed, so long as the padding is intact. Spread the word!
The gloves will be washed then matched as best as they can, so this is a good use for your ummatched singles you have laying around.
If you're not in San Francisco, you can also mail your old bicycle gloves before March 31 to SFBC, 995 Market St, Ste 1550, SF CA 94103.