I also added some green blotter paper to the sloped writing section. I attached it with removeable double-faced tape. The blotter paper protects the wood and makes a slightly padded writing surface.
In the photo below you'll notice that I've placed a blue coaster under the hinged clasp to keep it from marring the surface of whatever table or desk the campaign desk is sitting on when I'm writing. This blue coaster was all I could find around the house to serve this purpose, but I'm on the lookout for something that will look better with the green blotter.
I've already written quite a few letters and post cards on this campaign desk. Thank goodness I'm actually using it. I don't need any more what-nots!