Dosomething.org offers weekly grants for young social entrepreneurs; for more information go to Weekly Grants
http://www.dosomething.org/grant_list.
They also provide a database of grants available for youth which can be found at Youth Grants
http://www.dosomething.org/grants/database

Source:REFERENCE POINTS/ PACER Center http://www.PACER.org, a technical assistance activity of the TATRA Project funded by the RSA