Sept. 23–26. Local family-run sale of over 30,000 used books, as well as DVDs, audiobooks, video games, puzzles, and board games. Also, a presale on Sept. 23 from 4–8 p.m. for teachers and homeschool families. 9 a.m.–8 p.m., Washtenaw Farm Council Grounds, bldg. A, 5055 Ann Arbor–Saline Rd. Free admission. jlcbooksale.com.

Every Sat. & Sun., Sept. 12–Nov. 21; and Wed.–Fri., Sept. 16–Oct. 30. 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 and donuts available. Also, on Sept. 12 & 13, the season opens with a food truck rally, and on Sept. 19 & 20, view classic cars at the Fall Car & Jeep Show. 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 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.

Every Tues., Thurs., & Fri. 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., Sept. 19–Nov. 1. A large corn maze with 3.5 miles of trails and 3 exits to allow for routes of various lengths. Also, a U-Pick pumpkin patch, hayrides, petting zoo, pedal cars, straw maze, and yard games. On Sept. 27, Family Fun Day (11 a.m.–3 p.m.) features ice cream, balloon art, kids activities, and live music from the Saline Fiddlers. 11 a.m.–9 p.m. (Sat.), 11 a.m.–7 p.m. (Sun.), & 5–9 p.m. (Fri.), 6175 Daly, Dexter. $16 (ages 5–12, $13; age 4 & under, free with adult admission). blastcornmaze.com.