How far would you go??

My husband and I have been married for almost 12 years, and just within the last year or so he has been expressing interest in anal play with him, which pegging was brought up as well. At first it kind of surprised me since he never expressed feeling or didn’t want me to explore that part of him during sex. Anyways, I was wondering how far some of you ladies or men have gone and how did it turn out.