Maintenance costs can put a serious dent in your budget and savings—a dent that’s tough to repair. While there are certain things you definitely need an expert to handle, there are plenty of other situations in which you can make minor but meaningful repairs without calling for professional support—while saving serious cash. From closet rods to roof repair, and from wallpaper tricks to paint smarts, here is a sampling of practical tips and brilliant ideas to help around the house. Closet Rod Fix To fix a sagging clothes closet rod, buy a 1/2-inch galvanized pipe and a 3/4-inch thin-wall PVC pipe, both the same length as the rod. You can get these at a local home improvement center such as Home Depot or Lowe’s. Remove the existing sagging rod, then slip the pipe inside the PVC to create a new rod and slide this into the existing rod brackets. If …