Our sweet little Bambi is a '63 and we have a stand alone folding table that is just right for two. It folds up (sort of like a ironing board) and stores in the closet taking up very little room. You may want to research one of those and see if you can purchase one, would be the easiest solution.
However, in our sweet Bambi putting the table up and down means no room to walk from back to front, so I asked hubby to fashion a table just big enough for my laptop and perhaps a cocktail or cup of coffee. It isn't very big but works well for one person even to eat. It can raise up and down at various levels and rotates 360 with a "stop" to lock it in place. Stands on a single pole. Plans are for making a second table similar in size. I will find a picture to include.
You might also look at the early 60's Caravel's... they had a table that attached to the side and had a nice little storage area for it. Much of what would work for you depends on the layout of your Safari.
What in particular were you thinking about? You might also get some ideas from the thread on "open house" (can't exactly remember the name, sorry...) where folks post pics of the interior of their Airstreams.