After several years of tweaking my rules, I have found that these work really well. This set includes the mini books with a rule on each page. There is 2 forms of the book, one with "I can" statements and one with "we" statements. I usually send the books home the first week of school. I also store a set in the classroom and we'll bring them out when they start forgetting the rules. I've also added a page that could be used as a poster with all of the rules on it.
We share and take turns.
I can share and take turns.