We also wondered how we could best utilize this area since it was just wasted space. We discovered (by accident, of course) that a Closetmaid 3 shelf vertical stacker fit perfectly over the carpeted area. When we are camping, we put appliances and other things on it when we aren't using them (ie, the toaster, coffee pot, shoes, purse, books, etc). When we are traveling, we lay it on the dinette seat and put things in the shelves that we want to be safe while on the road.
It works for us so we thought it might be helpful to someone else.
You can find them at Walmart, Target, etc. Mine is white.