Oct. 2 & 3. Sale of new and gently used donated items to benefit the Dexter Museum. Donations accepted Sept. 30–Oct. 1, 9:30 a.m–3:30 p.m. 9:30 a.m.–5 p.m., 3443 Inverness, Dexter. Free admission. dexterhistory.org.

Every Wed.–Sun. A carnival atmosphere with a variety of family-oriented fall activities on this family farm, including wagon rides, a petting farm, a corn maze, and more. For an extra charge on Sat. & Sun., an apple cannon, paintball, apple or pumpkin picking, and other activities available. Cider & donuts available. Also, on Oct. 3 & 4, local artisans & crafters sell their items at the Craft Show Weekend, and on Oct. 24, young entrepreneurs sell homemade items at the Kids Market (noon–4 p.m.). No pets. 11 a.m.–6 p.m., 5565 Merritt (east of Carpenter), Ypsi. Weekend admission: $27.50 (babies under 2, free). Weekday admission: $18 (babies under 2, free), online only at wiards.com. (734) 482–7744.

Every Thurs., Fri., & Tues. All invited to play ACBL-sanctioned duplicate bridge (Tues. & Fri.) and a 499er game (Thurs.) for players with no more than 499 ACBL master points. 1–4 p.m. (arrive by 12:45 p.m.), 1830 Washtenaw Ave. $9 per person. If you plan to come without a partner, email [email protected]. 

Every Fri.–Sun. Three different audiovisual planetarium shows suitable for all ages. T. Rex (noon) describes the iconic dinosaur’s scientific and cinematic history (includes scenes of dinosaur violence); The Sky Tonight (1 & 3 p.m.) explores the current night sky, with tips on how to find the cardinal directions, constellations, and planets on your own; and Tales of the Maya Skies (2 p.m.) immerses viewers in the wonders of Mayan science, examining how Mayan scholars developed a sophisticated understanding of astronomy, architecture, and mathematics. Noon, 1, 2, & 3 p.m., 1105 North University. $9 at the gift shop. Limited capacity. (734) 764–0480, ummnh.org.