I made this board today so I'd have somewhere to put all my ideas for our living/dining area. I bought the frame at Goodwill ($3.99) and used some of the leftover cork we have. We covered an entire wall in our office with cork that we purchased in 4'x8' sheets, but you can buy cork in smaller rolls and in 12" squares at office supply stores. I replaced the glass with the cork, re-attached the backing and it was a done deal.
I also hung it right next to my computer so I look at it all day long. It's much nicer than the white wall I stared at previously.
There are heaps of notes for this image if you view it on flickr, as well as some detail shots.