Oct. 1, 8, 15, & 22 (different times). All invited to work on their own projects using the library’s tools, including silhouette cutting machines, die cutters, embossers, and button makers (Oct. 1); 3D printers, laser engravers, and 3D pens (Oct. 8); sewing machines, silhouette vinyl cutters, and heat presses (Oct. 15); and soldering equipment and electronic components (Oct. 22). 5:30–7:30 p.m. (Oct. 1, 15, & 22) & 11 a.m.–1 p.m. (Oct. 8), AADL Downtown, Secret Lab. Free. (734) 327–4200.

Every Thurs. Runners of all abilities invited to join this eclectic group of runners ranging from people training for their first 5K to ultramarathoners. Sessions are typically interval-based track workouts, followed by socializing at a nearby brewery. 6 p.m., Ferry Field, State at Hoover. May meet elsewhere if the weather is bad. Free. See walline.wixsite.com/bdtc to sign up for email updates on each week’s workout.   

Every Thurs., Sat., & Mon. (different AARC locations). Runners of all abilities invited to join a 5K mapped route (Thurs. & Mon.) or either a beginner or advanced group run (Sat.). AARC Colonnade (6 p.m. Thurs.), 2621 Plymouth Rd.; AARC Traver Village (7 a.m. Sat.), 901 W. Eisenhower; and Corner Brewery (6 p.m. Mon.), 720 Norris, Ypsi. Free. annarborrunningcompany.com.  

Every Thurs. Moderate-paced ride, 25 to 35 miles, along the less-traveled unpaved roads around Chelsea. Bring a chair and a beverage or snack for a postride tailgate. See aabts.org for weather cancellations or delays. 6 p.m. sharp, meet at Aberdeen Bike and Outdoors, 1101 Main, Chelsea. Email [email protected] for each week’s route. Free. (313) 980–5277.   

Every Thurs. All invited to drop in with broken electronics, furniture, toys, or any other item they’d like to try to repair or repurpose with the help and guidance of AHA members. Repairs not guaranteed. 6–8 p.m., basement of 255 E. Liberty, ste. 225. Free; donations welcome. [email protected], meetup.com/allhandsactive/events. 

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 Thurs. Bløm staffers lead 2 rounds of trivia. Teams or single players welcome. Prizes. 7 & 8 p.m., 100 S. Fourth Ave. Free, but purchase of food & drink encouraged. (734) 548–9729, drinkblom.com/events.

Every Thurs. All acoustic musicians invited to join members of this local chapter of Comhaltas Ceoltóirí Éireann for an informal evening playing traditional Irish music. Lessons offered. 7–9 p.m., Grace Church main bldg., 3150 Glazier Way. Free. [email protected], detroitirishmusic.org.  

Oct. 22 & 23. U-M piano and violin students perform Mozart sonatas to benefit the Ypsilanti–based nonprofit, Blessed Hands and Loving Hearts, that has the mission of empowering underserved individuals. 7 p.m., 929 Barton Dr. Free; donations appreciated at concert4acause.org. (734) 904–6935.