I was in Lowes today looking for an exterior 110v outlet for my Scamp. I decided to try and kill two birds with one stone and find someting large enough to cover the 3" round hole where the old 115v wire entered the Scamp.
Looking around I found this little weatherproof outlet box for $5 and now I can imagine lots of uses for it. I'll use it for my outlet and I'll use it for my landing gear switch.
Also notice the jagged edge in the photo. That is the hinge. They can be made to open length-ways or sideways. Then you can simply trim off which ever excess you don't use.