I have decided to expand the Theodore Roosevelt park a little. I squared the area up in order to have more space to accommodate a volleyball area and horseshoes or maybe bocce ball. I added the plywood and Homasote. I need to add the foam board and then ground cover. All materials for the expansion are leftovers from other parts of the layout. Total cost = $0. I like being able to repurpose materials for a new project whenever I can.
Andy