Those are good suggestions. That TP rule is a good one. In my house, I always keep way more than the necessary amount of TP, paper towels and tissues, even though it's just me and my girlfriend here.

I'll add some:

-First capable person in the kitchen cooks breakfast (or helps cooks breakfast) for everybody who wants breakfast. If you sleep in, then don't expect a hot breakfast, unless you make it yourself.

-Leave the kitchen cleaner than you when you arrived. For example, clean your own dishes, and help the cook clean up.

-Strike a match (or spray air freshener) after going number two.

-Extra pillows

-Bring your laptop if you have one. Don't expect to have full access to the house's computer system like you have full access at your own home. If there is only one computer, then the computer is for business and serious matters only. I have witnessed a 12-year-old kid single-handedly bring down an entire home computer network. My nephew was downloading random stuff (games, viruses, etc.) off the Internet.

-Kids are not allowed to say "I can't", not allowed to say "I don't know", and not allowed to whine. My nephew and nieces overuse these tactics, and so I had to make these rules.