Kevin Kelly points out that you can get 4 by 8 feet of whiteboard for $13 at Home Depot. Pretty awesome if you want a big wall of whiteboard to mess around with. Writing things huge and on walls make ideas feel more important.

And JB points me to this Krylon Chalk Board stuff. It’s $4.95 a pint and claims to turn any surface into a ready-to-us chalkboard with a few coats. And there’s also this page showing How to make chalkboard paint.