rail table

The Idea When building my van, i wanted a table which could be used while standing outside the van, either at the side door or out the rear. The idea being i'll have easy access to my fridge from the side door and can use it for a work surface at the rear if im working on my MTB at a bikepark...

My Caravelle has the cute but pretty limited multifunction table. I've removed one of the 2nd row swivel seats and I'd like to remove the little table too. What I'm after is a neat 'thing' that can be a table and is high enough to act as the end of my side of the bed when I fold the bench seat...