Per poster: used ClosetMaid storage items from Target. I have a small bookshelf, four drawers and cupboard and we painted a 2'x6' peice of plywood for the top. The whole project cost about $75 and took one afternoon including the shopping! The ClosetMaid system made a counter height desk so I sit on a stool but I use my desk for scrapbooking and end up standing most of the time anyway.
Aubrey & Lindsay's Beautiful DIY Basement Studio Desk