Paper cutter to decorate your house or office. You can also offer this letter opener to a Japanese martial artist - Iaido, kenjutsu, aikido ... – or katana or Japanese samurai swords lover.
Paper knife - Katana Sira saya-Heijoshin
Heijoshin is an important component of Budo.
It's corresponds with keeping one's senses (presence of mind).
Paper knife-Katana-Genko icchi
Genko icchi : Deeds and words correspond