Magic Eye pictures dominated mall kiosks during the '90s with books, calendars, and wall art. The pictures were hung in doctors' offices, at the dentist, and in cool elementary school classrooms everywhere. But after a few years of cross-eyed cultural relevance that peaked with an extended bit in the Kevin Smith film Mallrats, these interactive art pieces nearly disappeared completely.
Magic Eye is actually the brand name of a book series that collected these images. The images themselves are called autostereograms and predate the book series by a few years. They're a type of stereogram, an optical illusion creating depth from flat, two-dimensional images like the technology used in a Viewmaster toy.
See if you can train your eyes and find all the hidden images.