Tactile Drawing

(Video link) There are ten days left in a crowdfunded campaign to provide Lensen drawing kits to sight impaired kids. The Lensen is simple wooden drawing tool that makes drawing lines a tactile experience.

The pen unspools wool yarn onto a Velcro surface, which grips the yarn. The pens are designed for children with visual impairment, but they would be a great experience for any artist to use blindfolded and actually feel the lines coming out of the pen.
Link to "Start Some Good" crowdfunding page
Thanks, Rob Nonstop