50 Cal Wind Chime
Made with 5 pieces of once fired 50 cal brass, 4.5mm nickel plated ball chain, and 1/4" clear acrylic. Creates a nice soothing tone. The acrylic is UV rated, so it will stand up to the elements just fine. Make sure to use an acrylic cleaner or soap and water with a microfiber towel. Do not use windex or similar as it will scratch the acrylic.
Second option is made with 1/4" Baltic wood with a clear coat to protect it in the elements