The Cream DaVinci electric guitar demonstrates how E Ink screens can be used to change a product's design and color in real time. The entire front of the guitar is covered with an E Ink Prism 3 panel, allowing for a wide variety of patterns to be displayed.
Yeah I dunno. Also funny it shows up in a laptop review magazine first.
A guitar-sized eink screen is still pretty pricey, but $2500 - while reasonable in the big scheme of things - is way too much for me.