If you like craft beer the Kalamazoo area is a great place to do tasting. Bells is right in downtown Kalamazoo. Arcadia is in Battle Creek and Dark Horse in Marshall. There is even a small one in Paw Paw. Also plenty of wine tasting if you like that from Kzoo west to the lakeshore.
That plus the Air Zoo and Gilmore Car Museum. Also just about every weekend in the summer they have live music and festivals on the downtown festival site (about 2 blocks from Bells). Good time.
Fort Custer Rec Area is a great place to camp in the area, it's about 15 minutes west of Kalamazoo almost to Battle Creek. Another good place is about 20 miles north, Yankee Springs Rec Area. If you like to dry camp there is a rustic campground there which is wooded and quiet.