Anti-fall Tai Chi Qigong for Seniors - Ongoing classes for elders help improve balance and coordination. By donation. Mon at 11. Mill Valley Community Center, 180 Camino Alto, Mill Valley. Tues at 1. Marguerite Johnson Senior Center, 640 Drake Ave, Marin City. Wed at 9. Whistlestop Wheels, 930 Tamalpais Ave, San Rafael. Wed at 2. Maria B Freitas Senior Community, 455 Manuel T Freitas Pkwy, San Rafael. Thurs at 1. 415.383.9443. Corte Madera Parks and Rec Center, 498 Tamalpais Dr, Corte Madera (North Bay).

Artists Co-op Wants You - Established and emerging artists welcome. Call for more information. 707.525.8673. Studio 512, 512 Juilliard Park Dr, Santa Rosa (North Bay), 707.525.8673.

ArtsSonoma 10 - Venues, artists, musicians and performers countywide express their wild side with spontaneous and orchestrated feats of art through Sep 12. Free, www.artssonoma.com. Sonoma County, multiple locations, Sonoma (North Bay).

Be a CASA Mentor - Court Appointed Special Advocates provides adult mentors to nearly 150 children 10 to 12 hours per month. Ongoing. Free, 707.565.6375. CASA Sonoma County, Los Guilicos complex, Santa Rosa (North Bay), 707.565.6375.

Black Cat Cabaret - Pets Lifeline fundraiser with performances by cirque aerialists, acrobats and musicians. Sep 9-10 at 8. $75-$250, 707.996.4577, ext 110. Field of Dreams, 151 First St W, Sonoma (North Bay).

Call for Artists - Santa Rosa Recreation, Parks and Community Services invites local artists to exhibit artwork at three city venues: Steele Lane and Finley Community Centers and at the City Hall Council Chambers. Apply year round by submitting an application, available at the Finley Community Center or online at www.srcity.org. Ongoing. Finley Community Park, 2102 W College Ave, Santa Rosa (North Bay).

Chautauqua Revue - Unique community gathering features music, clowning, circus arts and more. Sep 9-11 at 8; special children's matinee, Sep 11 at 2. $6-$8, 707.874.1557, ext 201. Occidental Arts and Ecology Center, 15290 Coleman Valley Rd, Occidental (North Bay), www.oaec.org.

Community Garden Volunteers - Help needed for community spray-free garden. abartl@sonic.net. Juilliard Park, 227 Santa Rosa Ave, Santa Rosa (North Bay).

Conversation Cafe - Open, hosted, drop-in stimulating conversations about topics that matter. First and third Tues, 7 to 8:30; 1710 Coffee, 1710 Mendocino Ave, Santa Rosa. First and third Wed, 6:30 to 8; Coffee Catz, 6761 Sebastopol Ave, Sebastopol. Third Wed, 7 to 8:30; www.conversationcafe.org. Starbucks Coffee, McDowell and East Madison, Petaluma (North Bay).

Day Service Program Assistant - Council on Aging needs volunteers to help seniors participate in social activities. One-day-per-week commitment required. 707.525.0143, ext 105. Sebastopol Senior Center, 167 High St, Sebastopol (North Bay), 707.829.2440.

Do-It-Yourself - Learn bike skills and life skills in a series of community-building workshops. Feb 28 at 11am, "Fix-It Skills Around the House." Mar 1 at 11am, "Bike Care Basics: Intro"; at noon, Velo Diversity Day. Free-$10. Synergy, 4019 Sebastopol Rd, Santa Rosa (North Bay), 707.579.5811.

Drivers Needed - Volunteer for ACS's Road to Recovery program and drive cancer patients to their treatments. 707.545.6728. American Cancer Society, 1451 Guerneville Rd, Ste 220, Santa Rosa (North Bay).

Drop-In Meditation - Ongoing weekly classes for all levels include guided meditation and brief commentary. Tues-Wed at 7:30; also Wed at noon. Sun at 10:30, meditation and prayer practice for world peace; kids welcome. $10 donation. Mahakaruna Buddhist Center, 304 Petaluma Blvd N, Petaluma (North Bay), 707.766.7720.

Food Not Bombs - Helpers needed to protest war and capitalism by sharing free vegetarian food with anyone who's hungry every Sun at 5. www.scfoodnotbombs.org. Courthouse Square, Third Street and Mendocino Avenue, Santa Rosa (North Bay).

Game Tournaments - Every Sun, 1 to 5, Yu-Gi-Oh tournament. Every Tues, 5:30-9, Dungeons and Dragons tournament. Every Fri, 5:30 to 9, Magic: The Gathering tournament. Outer Planes Comics and Games, 526 Seventh St, Santa Rosa (North Bay), 707.546.2000.

Grief Support Services - Hospice and Adult Day Services offers several types of free grief support groups for Napa County residents including meeting in Calistoga, "Coffee and Conversation" group for men and "Tea and Comfort" for women. Napa Valley Hospice and Adult Day Services, 414 S Jefferson St, Napa (North Bay), 707.258.9080.

Healdsburg Walking Tours - Take insider's peek around town. All walks are easy and last 90 to 120 minutes. Daily at 9, history tour; at 11, specialty foods sampler; at 2, chocolate; at 4, burritos; at 8, ghost tour. Meet at fountain at downtown plaza. Reservations required. $20-$30, 707.484.6249. Downtown Plaza, Healdsburg Avenue and Matheson Street, Healdsburg (North Bay).

HIV Tests & Prevention - Weekly confidential and anonymous tests for HIV and hepatitis C. Sat, 9:30 to noon; Wed, 3 to 6:30. 707.565.4620. Riley Street Clinic, 418 Riley St, Santa Rosa (North Bay).

Legal Aid Workshops - Be proactive in your own legal matters. Most workshops start at 5:30, participants asked to sign up 15 minutes early. $10. Sep 14, "Employment Law." Sep 15, "Family Law and Custody"; at 7, "Wills, Trusts and Longterm Care." 707.546.2924. Sonoma County Legal Aid, 1105 N Dutton Ave Ste B, Santa Rosa (North Bay).

Paddleboarding - Learn about the fastest-growing watersport in the country. Sep 9 at 7. Free, 707.540.9025. REI Santa Rosa, Southside Shopping Center, 2715 Santa Rosa Ave, Santa Rosa (North Bay), 707.540.9025.

Parent/Child Classes - Jewish Family and Children's Services offers family activities and parenting classes. Tues and Thurs, 10 to 11:30, drop-in playtime. $6; no registration necessary. 415.491.7959. Parents Place, 600 Fifth Ave, San Rafael (North Bay), 415.419.3632.

Parenting Workshops - Ongoing lectures help parents raise happy kids and stay sane. Registration required. First and third Wed monthly, parents' group in Spanish. "A Star Is Born" keeps kids learning too: Tues at 9:30, twos together. $45; drop-in, $12. Wed at 9:30, infantgym; at 10:45, kindergym. $30; drop-in, $9. Thurs at 10:45, infantgym in Spanish; at noon, kindergym in Spanish. $15. $20-$50. California Parenting Institute, 3650 Standish Ave, Santa Rosa (North Bay), 707.585.6108.

Parents Place - Nonsectarian parenting classes; registration required unless otherwise noted. Wed at 1, postpartum blues and depression support group for moms and babies. $15. Fri at 10, drop-in playtime for ages toddler to five years. $6. JFCS Sonoma County, 1360 N Dutton Ave, Ste C, Santa Rosa (North Bay), 707.571.8131.

Positive Images - Advocacy, support and info for gay, lesbian, bisexual, transgendered and questioning young folks ages 12 to 25 with trained peer counselors and MFT interns. First and third Mon at 6, gender exploration group. Thurs at 7, confidential support meeting. Also available, community education speakers for high school, college and service agencies. Positive Images, 312 Chinn St, Santa Rosa (North Bay), 707.568.5830.

Redwood Health Library Volunteers - If you're friendly, computer-literate and interested in health, share three or four hours once a week helping out the Redwood Health Library, a medical library for the public. 707.778.9114. Redwood Health Library, 11 Fifth St, Ste 102, Petaluma (North Bay).