Tree hook to hang light objects on, such as garbage bags for plastic material. It prevents them to be blown away by the wind. Also, birds, rats and cats will have more trouble to make a mess.
Multiple hooks can be slided onto a strap, (such are used e.g. to join construction materials) so also your neighbours can benefit. Using a tie-wrap, the strap can be fastened onto a tree. See picture 3.
The system does not damage the tree, like nails and screws do.
Not suitable for heavy weight garbage bags.