"Twilight" and teens.
Middle and high school students can hear the Grammy Award-winning bass guitarist play and discuss his novel "The Music Lesson," 4-5 p.m. today, North Hollywood Regional Branch Library, 5211 Tujunga Ave., 818-766-7185. www.lapl.org.
Backpacks for Haiti
The Universal Love Foundation will collect backpacks for children, filled with age-appropriate footwear, toys, personal care supplies, 2-5 p.m. Wednesdays, Fridays and Mondays through Feb. 12, 28720 Canwood St., Suite 104, Agoura Hills. 818-231-3618. www.UniversalLoveFoundation.org.