Loose table legs can be quite frustrating, but with the right approach, you can easily fix them using a simple wooden dowel. Start by examining the leg to identify the cause of the looseness, whether it be a missing dowel or damage to the joint. If the dowel is simply loose, removing the leg and applying wood glue to the existing dowel can help secure it. In cases where the dowel is missing, drill a new hole for a wooden dowel into both the leg and the table frame. This will provide a strong connection, allowing for more stability. Make sure to allow the glue to dry fully before re-attaching the legs and using the furniture. For added durability, consider reinforcing the joint with corner braces for larger tables, or applying a finish that adds strength to the wood. With these tips, you'll have your furniture looking and functioning as good as new!