The pop culture side of me thinks…..if you took this and replaced the clear front with a two clear layers with a red and clear oil suspension in between...like those toys in the 80's that had two different colored oils with different specific densities and you turn it upside down to see one of the colors flow through a maze…Done with the right coloring, it would it look like you just coughed up a bit of blood....and the heat of one's breath/movement by breathing would likely make it red oil move around a bit, making it look like you just coughed up the blood, you'd likely have a big hit with the surgical victim/blood splattered nurse cosplay girls in Harajuku and probably clear alot space around you when you rode the train.
The crass, mercantile side of me thinks this might be a really good advertising device for some products…Print an ad in the the clear section (unlike cloth and paper masks, you can get some high quality color and image quality on plastic like that) with an ad and then give it away (although J folks might be suspicious of the quality of an free item). That or slap a Hanshin Tigers emblem/Tiger mouth on it, tiger print the sides and sell it for 1000-1500yen. Turn being ill/being a hypochondriac into an opportunity to show your support for the Tigers.
The Enrichment Center reminds you that the weighted companion cube will never threaten to stab you and, in fact, cannot speak.