Talk:Spectral viewers/@comment-2601:244:4800:9290:C0BC:C42E:44CD:9A40-20180513174101

The 2001 version looks like a pair of slightly-modified cheap safety-glasses.

They are therefore ideal for a Halloween giveaway: Buy a ton of glasses in bulk, modify them over the course of several days, and presto! A little something to spice up the usual fare of candy and plastic spiders.