1. Volunteer at a homeless shelter or soup kitchen.
2. Become a Big Brother/Sister.
3. Staff a rape crisis, domestic abuse, or suicide hotline.
4. Buy a bus or BART ticket for someone who looks like they could use the help.
5. Let an old or exhausted-looking person have your seat.
6. The next time a stranger is rude, smile and walk away.
7. Volunteer to read to kids at one of the public library's reading programs.
8. Volunteer at a public high school's tutoring program.
9. Make a cheap sack lunch: pb&j, juice box, small bottle of water, small bag of carrot sticks, and some cookies. (Addicts need the sugar, but don't go overboard.) Give it to a homeless person.
10. Become a conversation buddy to an ESL student. There are tons of language schools in the Bay Area.
11. Volunteer at a refugee center or a non-profit that works with immigrants.
12. Go to an army surplus store or a wholesale seller in Chinatown and buy a bulk of cheap blankets. Should cost less than $50. Donate them to a shelter. Leave them in a park where a lot of homeless congegrate.
13. Get a tagging removal kit. Cities usually give them out for free or for minimal cost (like a $1). Spend a morning removing tagging in your neighborhood.
14. Volunteer at a no-kill animal shelter.
15. Spend some time at a non-profit that works with parolees and ex-convicts helping them find housing, get into drug/alcohol treatment, get job skills, and obtain free/low-cost tattoo removal. They would love to see you.
16. Deliver Meals on Wheels, or help someone who does.
17. If you have your own car, take someone who can't drive to Mass or Confession.
18. Buy a professional women's outfit (blouse, skirt, cardigan/jacket), preferably in plus or super-plus sizes (above a US size 16 or so). A clerk can help you pick out something appropriately professional. Donate the outfit to a women's homeless or domestic violence shelter that helps women find employment.
19. Buy a boatload of colored pencils, Crayons, and markers. $20 will buy you scads of drawing/coloring materials at a Dollar Store. Donate your purchase to a pediatric wing, children's hospital, Boys & Girls Club, or elementary school.
20. Join a middle school's literacy program. Read to a 14-year-old kid who can't or won't.
21. The next time you're at the supermarket pick up as much baby food or disposable diapers as you can afford and donate it to a women's homeless or domestic abuse shelter.
22. Donate your services to Habitat to Humanity.
23. Join a non-profit that spays/neuters and vaccinates feral cat colonies around the Bay Area. The Hope Foundation is one such group.
24. Learn to make rope rosaries. My 15-year-old nephew's second attempt wasn't half bad. Get them blessed and leave them in the narthex of churches that have high poverty or immigrant parishioners.
25. Contact the administration of public school that serves a high poverty population. Through an administrator find out the needs of one of the school's first-year teachers (reading books, scissors and rulers, colored paper, you'd be surprised at the need). Help that teacher teach poor kids.
"Preach the Gospel at all times. If necessary, use words."