Right off the top of my head, what about the legality of a priest or minister being allowed to perform a marriage? Recognizing the oath a priest makes regarding confession and not forcing them to testify of such confessions in court? Recognition that some religions ceremonies and beliefs are against the law, but making exceptions for those? What about the discrimination laws that age, sex, religious preference, political views, etc cannot be used against you?
Some of the most obvious ones would be the ones that mirror the 10 commandments. (thou shall not kill, thou shall not steal) and the mentioned blue laws that are based on thou shall keep the sabbath (bars and stores can't sell alcohol on sundays) Then there is the "graven idol" thing which is why you don't see any statues or icons in muslim temples.