Nov. 21 & 22. Show and sale of thousands of tropical and hardy orchids, orchid-growing supplies, and related items. Also, free talks and demos by orchid growers on the “Basics of Growing Orchids” (11 a.m.) and “How to Repot or Mount Your Orchid” (1:30 p.m.) on both days. 10 a.m.–4 p.m., U-M Matthaei Botanical Gardens, 1800 N. Dixboro Rd. Free admission; metered parking. (734) 647–7600, annarbororchidsociety.org.

Nov. 1, 10, & 22. WCPARC docents lead both seasoned quilters and novices in stitching a traditional 1860s quilt top around a frame. Materials provided. The final product will be displayed in the historic cabin at Parker Mill. All ages welcome. 11 a.m.–2 p.m. (Sun.) & 10 a.m.–1 p.m. (Tues.), Sharon Mills Park, 5701 Sharon Hollow, Manchester. Free. (734) 971–6337, washtenaw.org/registerparks.

Every Tues.–Sun., except Nov. 26. All age 6 & up invited into the museum’s labs to use scientific tools and museum specimens to answer questions and solve problems. The newest program examines how membranes can help solve water shortages. 11 a.m.–3 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org. 

Every Sun. All invited to a relaxed pick-up game of this spirited team sport played with a flying disc. Beginners welcome. Play proceeds regardless of the weather. Note: Overly competitive players are politely asked to leave. 11 a.m.–4 p.m., Fuller Park, just west of the pool & parking lot (or occasionally across the street). Free. (734) 846–9418, [email protected].

Every Sun. All invited to play one of a wide variety of board games in a casual, friendly atmosphere. Instruction provided. Also, on Nov. 1, game playtesting with Michigame Design Lab (2 p.m.), during which players are invited to try out new board & card games from local designers Bruce Bielawa & Joe Hopkins and provide feedback. Noon–6 p.m., 2459 W. Stadium. Free. sylvanfactory.com.

Every Sat. & Sun., except Nov. 15, 28, & 29. Hands-on 20-minute family-oriented demo for age 5 & up that explores magnetism, magnetic fields, and what they have to do with everyday life. 12:30 & 2:30 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org. 

Every Sun.–Thurs. (different times). All invited to work on their knitting, crochet, weaving, and embroidery projects. 1–3 p.m. (Sun.) & 6–8 p.m. (Mon.–Thurs.), 401 N. Fourth Ave. Free. (734) 780–7867.

Nov. 3, 8, 16, & 22 (different times). A chance for adults to learn the basics of printing with movable type. 5–7 p.m. (Nov. 3 & 16), noon–2 p.m. (Nov. 8), and 1–3 p.m. (Nov. 22), AADL Downtown, Secret Lab. Free. (734) 327–4200.  

Nov. 1, 8, & 22. Thirty-minute tour that uses the museum’s specimens to tell the story of prehistoric whales and dolphins, who had 4 limbs and walked on land. 1:30 p.m., 1105 North University. Free. Limited capacity. Sign up at the welcome desk. (734) 764–0478.