My son's room had an ugly lacquered closet door right next to his drawing table.
My husband and I came up with this solution.
I covered the door with Dry-Erase/Whiteboard contact paper. ($3.50 per roll from Christmas Tree Shoppe)
We attached 6 metal bars ($2 each from Ikea) to the outside of the door.
The blue pocket chart is holding flashcards. (both available at Target for $1 and $2, respectively)
We used plastic hooks, buckets, a metal basket. ($1 - $6 each from Ikea)
He's only two and a half now, so we filled the buckets with some toys. The buckets will eventually hold his crayons, markers, paints, brushes, etc.
I don't know if I'll ever tell him that it's a whiteboard.