L.A Works is looking for teens to do volunteer work.The work   from arts and crafts, walking dogs or singing to babies, this organization offers many opportunities in Los Angeles from one-day to long-term projects. If you are interested there information is 

570 W. Ave. 26, Ste. 400 Los Angeles, CA 90065 (323) 224-6510. 

Reading to kids is also looking for volunteers to create enthusiasm with children and reading.There information is 3540 Wilshire Blvd. Ste. 424 Los Angeles, Ca 90010-2348
(213) 338-0008