See 27 Sunday. Today: “Water Management Lightning Panel” (1–2 p.m., Weiser Hall, 1010), presentations by U-M researchers TBA, followed by Q&A. Also “50 States of Sustainability” (5:30 p.m., Palmer Commons, 100 Washtenaw Ave.), a screening of an episode of a PBS series highlighting communities developing solutions to environmental challenges, followed by a panel discussion by U-M faculty and sustainability practitioners. 1 p.m. & 5:30 p.m.

Every Tues. All invited to play the classic word game, using the 5th-edition Scrabble dictionary. Bring your own set, if you like. 3:30–8 p.m., Arbor Brewing Company Corner Brewery, 720 Norris, Ypsi. Free. [email protected], meetup.com/ann-arbor-scrabble-meetup.

Every Mon.–Thurs. (except Sept. 7). The U-M’s highly disciplined 200+ member marching band or sections thereof can be seen and heard practicing on the new Elbel field, across the street from the old Elbel field. All welcome to find a spot in the bleachers and get a sneak preview of upcoming halftime shows. Rehearsals usually last 1–2 hours. 4:45 p.m., new Elbel Field, Hill at Fifth Ave. Free. (734) 764–0582.

Every Tues. Moderate-paced ride, 20 to 30 miles, along the less-traveled roads west and north of Chelsea. See aabts.org for weather cancellations or delays. 5 p.m. sharp, meet at Aberdeen Bike and Outdoors, 1101 Main, Chelsea. Start location occasionally changes. Free. (734) 662–0205.

Every Tues. All invited to play board games, assemble a puzzle, paint miniatures, or try a tabletop role-playing game, all in a friendly, welcoming atmosphere. Also, at 6 p.m., RPG One Shots, introductory games of different tabletop role-playing games perfect for beginners, finished after one session (see website for this week’s game, preregistration strongly encouraged at sylvanfactory.square.site). 5 p.m., 2459 W. Stadium. Free. (734) 929–5877, sylvanfactory.com.

See 27 Sunday. Today: “Water Management Lightning Panel” (1–2 p.m., Weiser Hall, 1010), presentations by U-M researchers TBA, followed by Q&A. Also “50 States of Sustainability” (5:30 p.m., Palmer Commons, 100 Washtenaw Ave.), a screening of an episode of a PBS series highlighting communities developing solutions to environmental challenges, followed by a panel discussion by U-M faculty and sustainability practitioners. 1 p.m. & 5:30 p.m.

Sept. 21 & 29 (different branch locations). Adults and teens invited to learn the basics of needle felting with wool, then make a small sheep (Sept. 21) or ghost (Sept. 29). 6–7 p.m., AADL Pittsfield (Sept. 21) & AADL Downtown (Sept. 29). Free. (734) 327–8301.

Every Tues. & Thurs. All invited to play a low-contact version of rugby. Beginners welcome. 6–7:30 p.m., Riverside Park, 1000 Canal St. Free. [email protected].  

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

Every Tues. Singers of all ages and genders invited to join rehearsals of this award-winning a cappella chorus. 7–8:45 p.m., First Unitarian Universalist Church, 4001 Ann Arbor–Saline Rd. Free to visitors; call ahead or check website (dues for those who join). (734) 796–7467, [email protected], hvharmonizers.org.

Every Tues. Women singers invited to join a rehearsal of this local 40-member a cappella barbershop harmony chorus. 7–9:30 p.m., UAW Local 898, 8975 Textile, Ypsi. Free to visitors (dues for those who join). (734) 765–3611, [email protected], voicesinharmonychorus.org.

Every Sun., Tues., & Wed. Runners of all abilities invited to join a run of 3–5 miles along varying routes from different locations. Rain or shine. Dozer Coffee (7 a.m. Tues. & 8 a.m. Sun.), 112 Jackson Plz., (734) 929–9022 & Fleet Feet (7 p.m. Wed.), 123 E. Liberty, (734) 769–5016. Free. fleetfeetsemichigan.com.