If you have trees in your yard where your dog can play safely, you can skip the hangar and simply tie the spring to a branch.
Step 1: Tools and Supplies
The project materials cost me $15 to buy and approximately 30 minutes to make. You can find everything you need at The Home Despot and the Dollar Store.
Step 2: Removing The Chain
Step 3: Adding The Split Ring
Step 4: Adding The Rope
Step 5: Adding The Bells
You can skip adding bells to the toy, if you want. I find that the bells make noises that encourage and excite the dog to play with the toy.