This is the solution:
3M Adhesive Accessories
We hang our keys up near the door, reachable from the ground OUTSIDE the RV. Very handy:
Then we have another favorite little helper that we use all the time. They are suction hooks that you can buy most anywhere. Today's RV's are usually clad in shiny fiberglass, it's the perfect surface for these handy little guys. We use them to hang wet towels and bathingsuits up outside to dry in the summer, and do the same thing in cool wet weather when we have dripping coats. When the awning is out, it's the perfect place to get them hung up to dry, and get them OUT of the camper. PERFECT!