An anonymous reader passes along a word about an innovative LCD writing tablet
. The Boogie Board costs $30, can be written on with a stylus or a fingernail, and uses no power in the act of writing. Only erasing consumes power — from a watch battery, which lasts for 50,000 erases. The total cost per "page" comes out to only 1/15th that of steno paper. The writing surface is pressure-sensitive and "highly responsive to variable amounts of pressure," so you can make thick and thin lines.