Deer deterrent swing

I started using these shower curtain connectors because I found a jar of them in the barn.

You could use any type of string, rope, or chain, but each material will give you a different swing.

The best way to find out is just to experiment with what you've got. I like the shower curtain connectors because it makes it easy to adjust the length and the part that rubs on the clanger gives you an additional metal on metal noise that helps vary the noise signature.