Drawn in the style of children's art (made with markers), it gathers what for me, are the symbols of summer in Japan. The little "ghost" is called 'Teru teru bōzu' and means shine shine monk. It is a traditional handmade doll made of white paper or cloth, made as an amulet supposed to have magical powers to bring good weather and to stop or prevent a rainy day. The melon is eaten with salt in Japan, although I have to confess I have never tried it this way. The 'uchiwa' is a traditional Japanese fan. Summer wouldn't be the same in Japan without fireworks, the ones that you can buy at any store, meant usually for lightning at the beach or at a picnic near the mountains or in the garden at the house. The Japanese wind chimes are awesome - they're made from glass and they are painted with different patterns. They make a very delicate, serene sound. I love the one I have at home! Ramune ('ラムネ') as you will see written on the bottle, is a carbonated soft drink widely known for the distinctive design of its bottle. They are made of glass and sealed with a marble. It's a very popular drink in summer. 'Kakigōri' is a Japanese shaved ice dessert flavored with syrup and condensed milk. 'Geta' They are a kind of sandal with an elevated wooden base held onto the foot with a fabric thong to keep the foot well above the ground. They are worn with traditional Japanese clothing such as kimono or yukata, but (in Japan) also with Western clothing during the summer months. And the other two images are very common at summer festivals when you have to catch fish with a device made from plastic which has paper in the middle, so it's very hard to catch fish or other things with it, as it often breaks.
Markers on croquis paper