Tai Chi for Seniors 8:45 to 9:45 a.m., Fairfield Senior Center, Round Table Room, 1200 Civic Center Drive. Meditation and deep breathing benefits the entire body by reducing stress, alleviating arthritis and increasing muscle strength. Enrollment required. Fee. Info: 429-6291.
Senior Day Program 9 a.m. to 3 p.m., Fairfield Senior Center, 1200 Civic Center Drive. Supervised activities for persons with cognitive or physical impairments. Enrollment required. Fee. Info: 428-7654.
Senior Video Chair Exercise Program 12:15 p.m., Suisun City Senior Center, 318 Merganser Drive. For seniors 50 and older. Improve flexibility and physical and emotional health. Enrollment required. Info: 421-7203.
Getting Back to Work Group 1:30 p.m., Vacaville Public Library Cultural Center, 1020 Ulatis Drive. Group of and for job seekers share information to find work. Info: Lani Clarke, firstname.lastname@example.org.
Hip-Hop Hustle 5 p.m., Kroc Center, 586 E. Wigeon Way, Suisun City. Burn calories and drop pounds with easy-to-follow hip-hop and dance moves. Info: www.GoKroc.org.
Worship Hula 5 p.m. (up to 12 years old), 6 p.m. (ages 13 to adult), Kroc Center, 586 E. Wigeon Way, Suisun City. Info: www.GoKroc.org.
Gentle Vinyasa Flow Yoga 5:30 to 6:45 p.m., McBride Center, 91 Town Square Place, Vacaville. Fee, preregistration required. Info: 469-6672.
Growing Through Grief Group 7 to 8:30 p.m., NorthBay Bereavement Center, 1411 Oliver Road, Suite 220, Fairfield. Facilitated by Barbara Bean Jenson, LCSW. Info: 646-3517.
Valley Writers Association 7 p.m., Fairfield Senior Center, 1200 Civic Center Drive. Writers of any genre and all ages welcome. Info: Norma Green, 422-8072.
Mare Island Toastmasters 7:30 to 9 p.m., Merrill Gardens Retirement Community, second floor annex, Common Room, 350 Locust Drive, Vallejo. Info: 644-4204, www.mareisland.toastmastersclubs.org.
Fundraiser for Williams Syndrome 1 to 9 p.m., Chevy’s Fresh Mex Restaurant, 1730 Travis Blvd. Info: 425-5181.
Fairfield Christmas Tree Lighting 6 to 8 p.m., Madison and Texas Streets, Fairfield. Includes a tree lighting ceremony, children’s rides, candlelight caroling, a Candyland scavenger hunt, a visit with Santa and live performances. Info: www.FairfieldMainStreet.com.
“Little Shop of Horrors” preview 6 p.m., Downtown Theatre Courtyard, 1035 Texas St., Fairfield. Part of the Fairfield Christmas Tree Lighting extravaganza. Info: www.FairfieldMainStreet.com.
Holiday Open House and Tree Lighting 6:30 p.m., at the foot of First Street, Benicia. Tree lighting and music by Kris Kringle and The Mistletones. Info: 745-9791.
Free Job Search Assistance Workshop various times and dates in December. 9:45 to 11 a.m., Workforce Investment Board of Solano County, 320 Campus Lane, Fairfield. A job placement coach will present valuable tips and tools for getting a job. Info: 863-3548.
Breakfast with Santa 7:30 to 10:30 a.m., Saturday, Solano Christian Academy, 2200 Fairfield Ave., Fairfield. All-you-can-eat pancakes, eggs and sausage, Proceeds help raise funds for the sixth-, seventh- and eighth-grade biannual educational field trip to Washington, D.C., and New York. Tickets: 425-7715.
Kiwanis Breakfast with Santa 8 a.m., Saturday, Courtyard by Marriott, 1350 Holiday Lane, Fairfield. Enjoy breakfast with Santa, the mayor and local leaders. Sponsored by the Kiwanis Club of Fairfield. Info: Casey Ladd, 633-4043.
Global Holiday Faire 9 a.m. to 3 p.m., Saturday, First Christian Church Vallejo, 1035 Indiana St.. Shop fair trade gifts from around the world. Info: www.globalholidayfaire.org.
Vanden High Sack Attack Competition 9 a.m. to 5 p.m., Saturday, Vanden High School, 2951 Markeley Lane, Fairfield. Twenty-five teams of robot-building students put their skills to the test in a series of robot challenges against teams from other schools. Info: www.vexrobotics.com or www.robotevents.com.
Christmas at the Waterfront noon to 8 p.m., Saturday, Harbor Plaza, Main Street at Solano Street, Suisun City. Activities include a skate rink sponsored by PG&E, arts and crafts, a bonfire, a lighted boat parade at 5:15 p.m. and the lighting of the Christmas tree following the boat parade. Info: www.visitsuisuncity.com.
Mad Hatter Holiday Parade and Festival 4 p.m., Saturday, Historic Downtown Vallejo, Georgia Street to the Waterfront. Celebrating the 160th birthday of Alice in Wonderland. The Mad Hatter Parade begins at 4:30 p.m. at Marin and Georgia Street. The tree lighting will be held after the parade, followed by the lighted boat parade on the waterfront. The Mad Hatter Masked Ball will be at 7 p.m. at Alice’s Palace, 620 Marin St.
Benefit for fallen CHP officer Kenyon Youngstrom 9:30 p.m., Saturday, Pepperbellys, 849 Texas St., Fairfield. Comedy show followed by live music. Headliner: Citations. Featuring: Rust Bucket. Tickets: 422-SHOW.
Holiday Vendors Fair 10 a.m. to 6 p.m., Sunday, Courtyard Marriott, Vacaville. Shop, see all the latest products, and try out samples. Info: email@example.com.
Made by a Military Spouse shopping event 11 a.m. to 5 p.m., Sunday, Engage Meeting Places, 371 Merchant St., Vacaville. Local military spouse-business people will set up shop for your holiday gift needs. Info: 685-9462.