Some other simple things I have done include some Quick Fists to hold my axe, a paper towel holder, and a temperature gauge with a remote sensor so I can see how much warmer I am inside the cozy camper
One of the best quick and easy things I have done so far is replace the front window curtain rod with a compression type that is inside the window frame. The old one stuck the curtain out a inch or two and had a nasty sharp bracket behind the dinnete's seat that was annoying to try and lean back against. Even though the pics are kind of dark you can also kind of see the recovered seats that my girlfriend did for me to get rid of the camp ones that were in there. They are actually a nice royal blue that goes well with the other blues already in the camper.
On the outside I mounted a CB antennae to the jack bracket as well