Camper Hacks - Love to hear your solutions

As the post above refers, I have a brother in law who is quite bright, well educated and successful in his field who can hardly change his own light bulbs let alone do anything mechanical. I have met many good people who were more impressed with themselves and their "education level" and yet were the ones that need the most help when camping......I was watching a man in a campsite across from me one time messing with his windshield wipers on his class C. After a little bit of amusement I went over and asked if he need a hand.....he was only changing wiper blades and could not figure out how to get the old ones off. Not to be too impolite I took my time in getting them off feigning having some trouble at it, 5 minutes later he had new wipers on. Thanked me profusely and offer a beer which I accepted and we sat down had a nice and interesting chat. Great guy he was, and that judging people thing is a two way street.