Caravan holidays are great, I pack up my studio and take it with me. When I am painting the board is propped against the table so it is at an angle.
The picture on the easel at the moment is in its very early stages. It is a Maidenhair spleenwort growing in the cracks of a wall.
The light in the caravan is excellent as there are many windows, but at night I use an extra daylight bulb.
The paint trays are packed away flat and protected with a piece of cardboard. Everything is stowed away into a cupboard.
The advantage with the travelling studio is it usually has beautiful views ready to paint from the window.