We currently have the following which I love and found useful,
When the weather allows.
Hilo roof, ace in 40C heat,
Under slung lpg tank with bbq point, all cooking done outside.(feeds BBq, cooker and heater) cheap and easy to use.Heater is a must in the uk)
Pop up tent, to chuck stuff in from the roof box.
Van shades blinds, loose some window view, but I love them.
We have been using the front window blinds(the sucker ones)
These were a pain so have just purchased one that goes on the outside.
Altera DL3 bike rike, easy to use once setup especially when the wife wants something out the back !
We also have a cab carpet, which makes it feel nicer.
Touch lights in the pop top and the tailgate.
Things I wished we had.
Bed with a bigger boot space at the back (we only have around 8-10 inches to put bags on)
The following are being looked into.
Wind out awning or Multi rail (not sure which yet ?(currently use a decathlon fresh tarp)
Mozzie net for the side door, (this is a work in progress)