personal seal
Any parents in Japan fretting about their kids’ hand hygiene will want to buy one of these cute stamps.
Even now, most legal documents in Japan don’t ask for your signature, but rather that you stamp your inkan, or personal seal, to show approval or confirmation. Also called a hanko, the stamp, customarily used with red ink, leaves behind just the bearer’s last name, at least in the case of ordinary inkan.
But if that’s just too solemnly boring for you, you can also spice things up with a personal seal made that’s decorated with characters from hit anime series such as Puella Magi Madoka Magica, Clannad, and Fate/stay night that not only lets you display your love for those franchises, but is also legally binding.