“Donna Helms: On the Nature of Things” — Tucson Botanical Gardens, 2150 N. Alvernon Way. Porter Hall Gallery showcases the artist, who works primarily in watercolors, exploring the versatility of the medium. 8:30 a.m.-4:30 p.m. daily through Nov. 4. Included with $13 admission. 326-9686.
“Visual Delights” Art Exhibition — Desert Artisans’ Gallery, 6536 E. Tanque Verde Road. Local artists Don Carter, Le Craven, Nancy Cressler, Susan Grijalva, Carol Hegedus and Del Marinello. 10 a.m.-5 p.m. Mondays-Saturdays; 10 a.m.-1:30 p.m. Sundays through Nov. 10. Free.
Netsuke and Diminutive Carvings From Japan — The Mini Time Machine Museum of Miniatures, 4455 E. Camp Lowell Drive. More than 100 netsuke and okimono, small Japanese carvings, on loan from the Phoenix Art Museum, Tucson Museum of Art, UA Museum of Art and several private collections. 9 a.m.-4 p.m. Tuesdays-Saturdays; noon-4 p.m. Sundays through Dec. 8. Included with $9 admission. 881-0606.
Second Annual “Fall in the Desert Exhibit” — Rita Watters Art Gallery, 6541 E. Tanque Verde Road. Fine art, photographs and decorative paintings by Rita Watters. 10:30 a.m.-6:30 p.m. Tuesdays-Thursdays; 10:30 a.m.-8:30 p.m. Fridays-Saturdays; 10:30 a.m.-4:30 p.m. Sundays-Mondays through Oct. 31. Free. 668-2609.
Free GED classes — Brookline College, 5441 E. 22nd St. GED pre-testing, tutoring and classes. 4-7 p.m. Mondays and Thursdays; 9 a.m.-noon Tuesdays and Fridays; 1-4 p.m. Wednesdays through Nov. 29. Free. 748-9799.
Tucson Letter Writers Club — Mostly Books, 6208 E. Speedway. Write letters to friends like in the old days. The club supplies everything but the stamps. 7-8 p.m. the first Thursday of the month through Nov. 7. Free. 571-0110.
Mainstream Square Dancing — Tanque Verde Lutheran Church gym, 8625 E. Tanque Verde Road. Solos, couples and families. No partner needed. 7:30 p.m. Thursdays through Nov. 7. $5 for first night; $4 each additional night. 797-2225.
Yoga in the Gardens — Tucson Botanical Gardens, 2150 N. Alvernon Way. Start your day off with weekly sessions of yoga practice overlooking a garden setting. 8-9 a.m. Thursdays through Oct. 24. Four-class series: $40; $30 members. 326-9686.
Senior Lunch Program — William Clements Center, 8155 E. Poinciana Drive. Recreational activities with lunch served at noon. For age 60 and older and their spouses. Reservations required one week before meal. Offered by the Tucson Parks and Recreation Department and the Pima Council on Aging. 9 a.m.-1 p.m. Mondays-Fridays through Aug. 1, 2014. $2. 791-5787.
“Buccaneers of the Caribbean” — The Gaslight Theatre, 7010 E. Broadway. Join the crew of the Esmerelda as it battles and brawls its way across the Spanish Main in search of gold. 7 p.m. Tuesdays-Thursdays; 6 and 8:30 p.m. Fridays and Saturdays; 3 and 6 p.m. Sundays through Nov. 10. $18.50; $16.50 students, seniors, military; $8.50 age 12 and younger. 886-9428.
Nature Stories — Roy P. Drachman-Agua Caliente Park, 12325 E. Roger Road. Outdoor nature story reading followed by an art activity. For accompanied young children. 10-11 a.m. Oct. 4. Free. 615-7855.
Canyon Quilters — Kirk-Bear Canyon Library, 8959 E. Tanque Verde Road. An unstructured opportunity to meet fellow quilters. Tables available for pin basting as well as electrical outlets. Bring your projects or unfinished objects. Noon-3 p.m. Fridays, ongoing. Free. 594-5275.
Reptile and Amphibian Show and Sale — Tucson Expo Center, 3750 E. Irvington Road. Supplies, clothing, art and anything reptile-related. Petting zoo with alligators, giant tortoises, giant monitor lizards and snakes. Exotic venomous snakes from around the world. Free parking and snack bar. 9 a.m.-6 p.m. Oct. 5; 10 a.m.-4 p.m. Oct. 6. $7; $3 kids 6-12; free for those younger than 5. 405-7020.
Argentine Tango for Beginners — Sonoran Ballroom, 5536 E. Grant Road. 2-3 p.m. Saturdays through Oct. 26. $10. 468-5536.
Bear Canyon Open Air Market — Bear Canyon Shopping Center, 8987 E. Tanque Verde Road. 9 a.m.-2 p.m. Saturdays through Dec. 21. Free.
Fall Vegetable Gardening — Harlow Gardens, 5620 E. Pima St. Learn how to grow your own salad greens and other cool-season vegetables. 2-3 p.m. Oct. 5. Free. 298-3303.
Bob Kay, the Singing, Drumming DJ — United Methodist Church, 655 N. Craycroft Road. Kay plays along to oldies but goodies. Finger-food potluck provided and soft drinks for sale. 5 p.m. Sundays through Oct. 27. $3. 883-5491.
Sunday in the Park — Colossal Cave Mountain Park, 16721 E. Old Spanish Trail. “Geology Rocks” explores how various types of rocks are formed. 2-3:15 p.m. Oct. 6. Free; park use fee: $5 per car (up to six people). 647-7275.
Oktoberfest — Trail Dust Town-Pinnacle Peak, 6541 E. Tanque Verde Road. Music from The Bouncing Czechs and The Greasy Light Orkestra. Beer and food specials at Pinnacle Peak and Dakota Cafe. Games and rides available. 4-8 p.m. Oct. 6. Free. 296-4551.
Blessing of the Animals — Congregation Chaverim, 5901 E. Second St. Bring animals on leash or in a carrier. 10-11 a.m. Oct. 6. Free. 320-1015.
Blessing of the Pets — Congregation Anshei Israel, 5550 E. Fifth St. Bring animals on leash or in a carrier. 11:45 a.m.-12:15 p.m. Oct. 6. Free. 745-5550.
“Earth Ribbons” and “Minerals and Metals” — Academy Village Long Gallery, 13701 E. Langtry Lane. Works using natural stones by silversmith Debbie Mechigian and inks, watercolors and acrylics by Ellen Cohen. 9 a.m.-4 p.m. Mondays-Fridays through Jan. 5. Free. 647-0900.
Read to a Dog — Kirk-Bear Canyon Library, 8959 E. Tanque Verde Road. Kids practice reading aloud to dogs. 6-7 p.m. Oct. 7. Free. 594-5275.
Go online to dailystarcalendar.com for more calendar listings and to submit an event at least three weeks in advance.