Bombchu are small, explosive items similar in appearance to a stylized rodent. When released, a Bombchu will dash along a surface until its fuse is gone or until it hits a solid object; in both cases, it explodes. Bombchu can be used to hit certain far-off targets. Often, the usage of Bombchu is mostly or entirely optional.
About this paper model:
You may get this papercraft template here: The Legend of Zelda - Bombchu Free Papercraft Download