When you’re vacationing in Indianapolis, you don’t have to break the bank to stay occupied. There are plenty of free or cheap activities that will provide you with hours of fun. Add some of these exciting destinations to your list when planning a budget-friendly trip. Treehouses at Flat Fork Creek Flat Fork Creek is a fairly new park that’s home to three amazing treehouse structures. Located at 16141 E. 101st Street, these treehouses will give you and the children hours of fun. There are challenging walkways to navigate, stairs to climb, and ledges to look over. Best of all, the…