We have created our own, lower key celebrations than either of us had as dc.
We have an advent wreath that we light on Sundays in December (only not tonight as dh and dd1 are working, we'll do it tomorrow). Nice, totally consumer free tradition as part of our faith.
We do a few full on church things, but that's just the way it is, I lead a Christmas party for asylum seekers, dh is our acting-pastor so he has talks to do at pre-Christmas services.
Christmas Eve we try to go to the cinema (this year it will be Star Wars) and have s low key dinner of steak or venison.
I lie in bed like a small child on Christmas morning as I get so excited until everyone wakes up. We have stockings, very few bigger presents (this year I have a jumper for dh). Mil is almost always with us.
We have a full scale Christmas lunch but Roast Dinner is a general fave in our house. This year will be fun more than normal as my brother is coming. He's autistic and will come with 2 support workers (who will also eat with us) and he adores his nieces and nephew so it's a huge deal for him.
I know this thread was about keeping Christmas simple, but spending it with my brother is a huge highlight, for all of us. He'll be hard work, want to help (we'll have the kids, him and his guys walk the dog!) and arrive early and leave as soon as dinner is over. But it will make his day (his mum, my dear stepmum, has already cried twice on the phone to me to say Thankyou!) and I'm expecting this to be a fabulous year.
Sorry for long post. Got carried away!!