I've struggled with trying to develop a family tradition. But it's hard to come into this as an adult with absolutely no familly history to build on. I did have xmas at my paternal grandmothers, which is where I learned to sing carols and make pumpkin pie. But that was it. My maternal grandmother hated the JW religion for taking xmas away from her. She used to buy gifts for herself and tell her friends they came from her children.
The first year we had a big celebration on xmas eve, with all my daughters friends coming by three days in a row for leftovers. I made paella (which is always our xmas dinner tradition), tabouli, nachinka, hummous, perogies, pumpkin pie - we had a real ethnic mix. My youngest and I decorated the house to the hilt and had a blast shopping for gifts. We sang xmas carols and went on a crazy gift frenzy.
OVer the next few years we toned things down on the gift part. By the time the grandkids came along, we started to limit the gifts to kids only. We've had a few xmas's where one family member acts out (not always the same one).
So far we haven't settled on any particular way to do it. I still make paella and we eat very late. We always do it on xmas eve and we open our gifts throughout the evening. So I guess those are our main family traditions. Last year my grandson's father was an asshole and wouldn't let the boys come on xmas eve (the custody agreement alternates the holiday but he doesn't celebrate, he just wanted to ruin things for us.)
I used to love the decorating part, but over the last few years I'd be just as happy to not bother with a tree. I do it for the grandkids but usually we set it up only a day or two before - they love helping decorate it. I've been trying to establish a tradition of taking them shopping for gifts and encouraging them to buy for others.