You could make your own customized Key Finder keychain by using a variety associated with materials, including steel, glass, and wooden. It features a whistle that beeps if a key is definitely close to. metal keychain holder are made within China and sold for under $10. Costs will vary relying on the store and the specific item that you are ordering. Particular person retailers set their unique prices and guidelines, so make certain to check around just before making a buy.