"What are these shredded balls on my property?"
A: "Juniper-hawthorne rust: a fungal disease. It starts as a gall then the tentacles appear around spring/rain. It probably won’t kill this tree but it can seriously mess up secondary hosts ie apple trees. Only way to get rid of it is to prune then burn the removed branches.. don’t forget to disinfect your tools after."
If I remember correctly that's a book holder, two straps are used to hold the books and that's the handle.
Used on a siphon hose to keep air from entering the vine wile not used, thus preventing vineger growth.
My Dad had some, he'd get them out when we went ice fishing!
Don't Google it, Duckle it!