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IN CONCORD

Farmers Market, 9 a.m.-2 p.m. Tuesdays, Todos Santos Plaza. Pcfma.org.

On Stage

“The Children’s Farm,” about a child’s journey of self-discovery. Oct. 15-16, Town Hall Theatre, 3535 School St., Lafayette. townhalltheatre.com.

Improv for Good, short-form games and an adult-themed second half. 7:30 p.m. Oct. 15, Campbell Theater, 636 Ward St., Martinez. 925-350-9770 or campbelltheater.com.

Grindstone Band, an eclectic, blues-infused rock group. 7 p.m. Oct. 16, Campbell Theater, 636 Ward St., Martinez. $17 at the door or $18.84 with service fee in advance at grindstoneband.brownpapertickets.com.

“Spontaneous Shakespeare,” completely improvised comedy in the style of William Shakespeare by Synergy Theater. Through Oct 24, Lesher Center for the Arts, 1601 Civic Dr., Walnut Creek. 925-943-7469 or lesherartscenter.org.

“All Together Now,” with songs by classic and contemporary Broadway composers and lyricists performed by Pinole Community Players and Pittsburg Community Theatre performers. 8 p.m. Nov. 12 and 4 p.m. Nov. 13, Steeltown Coffee & Tea, 695 Railroad Ave., Pittsburg. 925-439-PLAY or pittsburgcommunitytheatre.org.

“The Nutcracker Suite,” a new full-length production by Diablo Ballet. 7:30 p.m. Nov. 12 and 2 and 7:30 p.m. Nov. 13, Lesher Center for the Arts, 1601 Civic Dr., Walnut Creek. Meet the dancers at a post-performance reception at Massimo’s. A virtual option will be available for streaming Dec. 3-12. Early bird pricing through Oct. 13. 925-943-SHOW, lesherartscenter.org or diabloballet.org.

In the Community

Bay Area Kids’ Book Fair, with authors, illustrators, publishers, booksellers and educational programs. 10 a.m.-2 p.m. Oct. 17, Shannon Community Center, 11600 Shannon Ave., Dublin. Free. BayAreaKidsBookFair.com.

Spooktacular Boo BBQ, a drive-through event to benefit the Bay Area Crisis Nursery. 4-6 p.m. Oct. 30, 1510 Mendocino Dr, Concord. $40. Ticket buyers can select a pickup time at bayareacrisisnursery.org/spooktacular-bbq. Register before Oct. 23. Discount cards to local merchants are also being sold for $15.

Tri-Valley Halloween Con, celebrating everything pop culture with toys, apparel, new and vintage collectibles, art, anime, comics, Legos and more. A free, family-friendly Halloween Cosplay Costume Contest is open to all attendees, with cash prizes. 10 a.m.-4 p.m. Oct. 31, Shannon Community Center, 11600 Shannon Ave., Dublin. Advance tickets at TriValleyCon.com; $2 Toy Buck included. Kids under 10 free.

Hospice Tree of Lights. Honor the memory of loved ones by dedicating a light. 6:30 p.m. Nov. 9, Pleasant Hill. 5 p.m. Nov. 29, Concord. hospiceeastbay.org/tol.

Visual Arts

“Thinking Art,” more than 300 works in a wide array of styles. 11 a.m.-5 p.m. Tuesday-Saturday through Nov. 6, Valley Art Gallery, 1661 Botelho Dr., Suite 110, Walnut Creek. 925-935-4311 or valleyartgallery.org.

Fundraisers

Mayor’s Cup Golf Classic, Concord Mayor Tim McGallian hosts the 36th annual fundraiser for the Concord Historical Society, Concord Junior Giants and First Tee Contra Costa youth golf program. 11 a.m.-7 p.m. Oct. 22, Diablo Creek Golf Course, 4050 Port Chicago Highway, Concord. $150; $125 for seniors and city employees. Call 925-686-6266 or get the registration brochure here.

Outdoors

“Meet Hazel the Tarantula,” with naturalist Virginia Delgado. 4-4:30 p.m. Oct. 16, Black Diamond Mines Regional Preserve. Free; $5 parking. 510-544-2750.

“Beautiful Brunches Hike,” a moderate, 2.4-mile hike with naturalist Kevin Dixon. 8:30-10:30 a.m. Oct. 17, Black Diamond Mines Regional Preserve. Register at 888-327-2757, option 2. Free; $5 parking.

Rose Hill Cemetery Walk, featuring guides in 19th century attire. 6-8 p.m. Oct. 23, Black Diamond Mines Regional Preserve, Antioch. Free; $5 parking. Register at 888-327-2757, option 2.