Wondrous Item, rare
This hollow metal tube measures about 1 foot long and weighs 1 pound. As a Magic action, you can strike the chime to cast Knock. The spell’s customary knocking sound is replaced by the clear, ringing tone of the chime, which is audible out to 300 feet. The chime can be used 10 times. After the tenth time, it cracks and becomes useless.
tbf unless your constantly opening stuff, making an enspelled weapon of knock likely would be a better use of crafting time. However as an item to be given out it is nice.
knock knock