Japanese wind chimes, or furin (“wind bells”), are often found hanging from the eaves and porches of houses in Japan. Most are made up of three parts: a bowl or bell-shaped exterior (gaiken), a clapper (zetsu), and strips of colorful paper (tanzaku) that flutter in the wind. When a breeze hits the tanzaku, the clapper hits the bell, making a charming sound. Copper and bronze were the most common materials for wind chimes until the 18th century, but chimes made of iron and glass became more popular over time. Today, glass furin are the most popular kind. The artisan hand-blows molten glass into a bubble, cuts an opening into the bubble and smooths the rim with a whetstone to create a bell shape, and places a wire inside for hanging. Glass wind chimes often feature images of flowers or fish, and the designs are usually hand painted from the inside so that the colors stay vibrant over time.