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 (8 a.m. Sun. & 7 a.m. Tues.), 112 Jackson Plz., (734) 929–9022 & Fleet Feet (7 p.m. Wed.), 123 E. Liberty, (734) 769–5016. Free. fleetfeetsemichigan.com.

Every Tues.–Sun. All age 6 & up invited into the museum’s labs to use scientific tools and museum specimens. The newest program lets participants try out simulated snake senses to experience the world as if they were a snake. No live snakes. 11 a.m.–3 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org.

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. meetup.com/ann-arbor-scrabble-meetup. [email protected].

All invited to join Earth and Environmental Sciences professor Selena Smith to discuss the interdependencies between waterways and humans, explore water sampling trays to look for aquatic organisms, and take a short walk. Dress for the weather. 4:30 p.m., 1800 N. Dixboro Rd. Free; metered parking. (734) 647–7600, mbgna.umich.edu/events. 

Every Tues. All invited to play one of a selection of 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.

Adults & teens invited to use straw, colorful paper, twine, and a wooden hoop to make these Polish decorations used to celebrate important life events like birthdays and holidays. 5–7 p.m., AADL Downtown, lower level program rm. Free. (734) 327–4200.

All invited to use analog tools to create a 2-color design for a 2026 calendar and print it with the lab’s Risograph duplicator, a digital screen printer similar to a photocopier. 5–7 p.m., AADL Downtown, Secret Lab. Free. (734) 327–4200.

Every Tues. Moderate-paced ride, 20 to 30 miles, along the less-traveled roads west and north of Chelsea. See aabts.org for weather cancelations or delays. 6 p.m. sharp, meet at Aberdeen Bike and Outdoors, 1101 Main, Chelsea. Start location occasionally changes. Free. (734) 662–0205.

The Lakehouse Bakery (Chelsea) owner Keegan Rodgers hosts a hands-on introduction to making great tomato sauce and finding other uses for the abundance of tomatoes from your garden or local markets. Tasting. 6–7 p.m., AADL Malletts Creek. Free. (734) 327–4200.

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

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. 

Musicians of all ability levels invited to play ukulele with members of Michigan’s oldest ukulele club. 7 p.m., 1922 Packard. Free. (734) 662–8283.

Every Tues., except Aug. 18. 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.

All women invited to learn about this women’s chamber choir dedicated to performing and recording a variety of music, especially lesser-known repertoire from the Medieval, Renaissance, and Baroque periods and works by women composers. This meeting includes auditions for new members. 7–9 p.m., contact for location. Free, but reservations required by calling (734) 800–4065 or emailing [email protected]. annarborgrailsingers.org.