This video, titled "[Handmade] How to Make a Bamboo-Copter" (【手作り】たけとんぼの作り方), was released by "Ekapyon Maru" (えかぴょん丸).
There are many bamboo forests in Japan, and various tools and toys have been made from cut bamboo since long ago.
The bamboo-copter shown in the video is a popular toy that is easy to make.

Bamboo-copters require thin blades that act as propellers and a stick that is used to build up momentum.
The way in which the wings are shaved changes the way the bamboo-copter flies, so it's important to make the wings very thin.
The finished bamboo-copter can be flown and played with as shown at 6:48 in the video.
If making your own is too difficult, you can buy bamboo-copters from grocery stores, candy stores, and online as well!