Tyree Callahan has made this awesome typewriter mod. The traditional letter stamps have been replaced by sponges impregnated with ink, so they form beautiful images akin to the work of the Impressionists. The Shift key functions too, altering the intensity of the colour you choose.
Reading the blog post, I think this is a non-working concept, but it's awesome nonetheless! This is the kind of off-beat technology-hack that I love.
Via aesthetics of joy