TODAY

TOPS (Take Off Pounds Sensibly): 6 p.m., Grovetown United Methodist Church, 206 E. Robinson Ave.; nonprofit weight-loss support group; (706) 863-0726.

MARTINEZ-EVANS OPTIMIST CLUB: Noon, Jones Creek Clubhouse; (706) 830-5730.

FRIDAY

Fourth annual Aiken Farm Fest: Friday and Saturday, 207 Chime Bell Church Road, Aiken; antique tractor and engine show; tractor and street truck pulling; a kids pedal pull; tickets cost $5, with children 12 and younger free; www.aikenfarmfest.com.

BALLET STARS OF NEW YORK: 7 p.m., Imperial Theatre, 745 Broad St.; Augusta Ballet event featuring principal dancers from New York and other guests; music by Augusta Symphony members; fifth annual Black Tie Gala afterward; for tickets, call (706) 261-0555.

OYSTER ROAST AND TOAST: 7-11 p.m., Daniel Field Airport; $30 per person, $50 per couple; roasted, steamed and raw oysters, chicken fingers, desserts, drinks, music by the Toasters; benefits Child Enrichment Inc., the Child Advocacy Center and Court Appointed Special Advocates.

CRS FAIR TRADE PRESENTATION: 7 p.m., at 811 Telfair St.; fair trade coffee from Cafe Campesino in Georgia will be available.

SATURDAY

HARLEM'S SPRING TRASH TO TREASURES MARKET: 8 a.m. to 1 p.m., on the field next to Harlem United Methodist Church; to sign up for a free space, call (706) 556-0043.

YOUTH SERIES: 8 a.m. to noon, Gospel Water Branch Baptist Church, 703 Furys Ferry Road, Evans; leadership workshop for youths ages 13-17; refreshments and door prizes; (706) 860-7091.

JIM METTS MEMORIAL CAR SHOW: Registration at 9 a.m., Wesley United Methodist Church, Evans; show opens to the public at noon; free admission; held by the Evans Lions Club; (706) 860-6655.

THE DOODLEBOPS LIVE: 1 p.m., University of South Carolina Aiken Convocation Center, 471 University Parkway, Aiken; $17-$42; (866) 722-8877, www.uscatix.com.

DIXIE BLUEGRASS FESTIVAL AND CHILI COOK-OFF: 9 a.m. gates open, 11 a.m. cooking starts, 2 p.m. bluegrass bands; Powell Pond Road off S.C. Highway 19; admission $6; chili sampler $10; www.dixie bluegrassfestival.com.

MARINA LOMAZOV AND JOSEPH RACKERS: 7:30 p.m., Jabez Harden Performing Arts Center, Evans; $30; full-time students and military personnel with valid ID can purchase $7 tickets on concert evening only (subject to availability); Augusta Symphony Columbia County Music Series; (706) 826-4705; www.augustasymphony.org.

COOKIN' FOR KIDS: 11 a.m. to 6 p.m., Daniel Field, Wrightsboro Road; ages 13 and older $5; ages 3-12 $3; ages 2 and younger free; featuring food, raptor and reptile shows, Ladybug the Clown, karaoke and children's games; benefits Child Enrichment Inc., the Child Advocacy Center and Court Appointed Special Advocates; www.cookinforkids.com.

RUMMAGE SALE: 8 a.m. to 3 p.m., CSRA Humane

Society, 425 Wood St.; benefits homeless pets at the CSRA Humane Society; (706) 261-7387.

WALK MS AUGUSTA: 9 a.m. registration, 10 a.m. walk, Stevens Creek Elementary School, 3780 Evans to Locks Road, Martinez; www.walkmsgeorgia.org.

CENSUS DAY: 9 a.m., Henry H. Brigham Center, 2456 Golden Camp Road; (706) 798-5294.

STATE MIDDLE AND HIGH SCHOOL SCIENCE OLYMPIAD: 9 a.m., various locations at Augusta State University, 2500 Walton Way; (706) 731-7993, www.aug.edu/gaso.

PART WITH YOUR PAINT EVENT: 10 a.m. to 2 p.m., Evans Government Center, 630 Ronald Reagan Drive; household paint only; fluorescent light bulb recycling; call Jenny Hinton at (706) 312-7195 or e-mail to jhinton@ columbiacountyga.gov.