Various works by Dutch typographer Jurriaan Schrofer, mostly from 1960s and 1970s.

Various paintings by Bridget Riley 1961-1981.

Labyrinth table where you can move figures around using magnets. By Benjamin Nordsmark, 2015. Watch a video of the table in action here.

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Nataraja. Painting by Bridget Riley, 1993.

Japanese ASCII from utf8art.

Raspberry Porter, a homebrew FOSB (Free Open Source Beer) by Hans Holmberg. Photo by Linus Walleij.

In Attendence, painted by Bridget Riley 1993.

By BJ Alumbaugh, 2012. h/t: internet-shaman

Finnish lesbo-seksiä ad on teletext.

Fête painted by Bridget Riley in 1989.