Here’s something fun you might want to spend some money on: a poster of the Mandelbrot set, in the style of an old-fashioned navigation chart.

https://www.kickstarter.com/projects/billtavis/mandelmap-poster-a-vintage-style-map-of-the-mandel

The Kickstarter has already racked up many multiples of the original funding goal with three weeks still to go, so it’s at the “effectively a pre-order” stage. The posters start at \$26.

Kickstarter: Mandelmap poster by Bill Tavis.