Update 4/15: Everyone 16+ in California is now eligible to get a vaccine! Go straight to the appointment page now.
There are still places outside the Bay Area with a surplus of vaccines, so I'm going to leave some of these resources up for now, for those who don't want to search of a vaccine, want one soon, and would prefer to drive a few hours outside of the Bay Area to find one:
Fresno, Madera, Modesto, Stockton, Clovis, Sutter Creek, Yuba City, etc. Pharmacies out there seem to have more than they can handle right now, as well as these providers: Tulare Curative and United Health Mendota/Clovis, BJRX Stockton
Volunteer at a Vaccine Site (no longer necessary to become eligible, but they still may need your help):