And, let me tell you, I've been looking! So here you go, the Neon Genesis Evangelion humidifier, which is based on the iconic anime of the same name. It features Eva Unit 01 standing atop NERV head1quarters in Evangelion and looks more like a diorama and less like a humidifier. It also looks completely bonkers.
There are even LED lights that can not only change the colour of the water vapor, but also blow your mind. Priced at ¥9980 (US$127) and out this November.