Sierra Black, a poly woman who has been on 20/20 and writes articles on non-monogamy, has penned a new and useful piece called "How To Bring Your Boyfriend Home For The Holidays -- When You're Polyamorous."
Black has previously opted not to bring a boyfriend to Thanksgiving in order to keep the peace, but she has some excellent pointers for those wanting to share their multiple partners with the family:
Above all, remember that you're going to a lot of effort to spend time with these people -- all these people, your parents and your partners -- because you love them. You want them to connect with each other. Look for the comfort zone between your partners and your parents, just as you would with one partner. Don't expect them to fit perfectly together, but find the points of overlap and focus on those. Does everyone love Chinese food? Maybe skip the traditional meal and order take-out. Universal fondness for board games? Bring some and cut the conversation short in favor of a few rounds of Dixit.