Wind chimes!
The wind chime is a time-honored item from Japan's past reminding everyone of the image of summer.
The shape is usually like a bowl turned upside down and there's a portion inside that causes the chime to sound, creating a refreshing noise. When there wasn't air conditioning in the past, these chimes created the illusion and feeling of a cool breeze.
Here are illustrations featuring wind chimes, making summers feel cooler!