As much as you can carry
You can quite literally "shop till you drop" in Mishawaka's Grape Road/Main Street shopping corridor. After all, it's the second largest retail center in the state of Indiana. You could spend half a day at the University Park Mall alone. The mall has more than 120 stores to explore. Within a short one-mile drive of the mall, you'll find new shopping centers, your standard "big box" retailers and a selection of locally owned specialty shops.