For our second background, we painted a wall with chalkboard paint, which you can get at your local hardware/paint store. This was inspired by the awesome chalkboard wall from "500 Days of Summer". I didn't know how fun it was to have a chalkboard wall! You can still decorate your wall with shelves, picture frames, etc..just like any wall.
Other post it note wall inspirations:
Other chalkboard wall inspirations: