- Join troves of sci-fi, comic book and movie fans at Motor City Comic Con.
- Visit Motown Museum for free and watch as it unveils a new park.
- Volunteer to help clean up the Rouge River.
- Grab tickets for a Detroit donut festival.
- Try an obstacle course at Waterloo Recreation Area.
- Taste-test barbecue sauces on the waterfront in Wyandotte.
- Walk to benefit the American Heart Association.
- Brave the masses for a wide selection of plants at Eastern Market Flower Day.
- Stock up on vintage and used goods at the Detroit Rummage Sale.
- Relive the John Hughes days with "The Breakfast Club" at the Redford Theatre.
Kickoff list from Crain's Detroit Business. Add your suggestions below.