My Mom always gives Christmas Pjs as gifts on Christmas Eve, too!
How about doing a big pot of chili in the crockpot for Christmas Eve? You can start it in the morning, let it cook all day, throw some baked potatoes in the oven about an hour before you're ready to eat - TADA! Done.
We actually just started doing the Advent Wreath last year, so that is a new tradition for us - though I know it is a very old tradition in the church.
These holidays for us are going to be all about memories. My grandfather was just dx with Alzheimer's, my grandmother on the other side is failing very quickly from Parkinson's, and my great-uncle has been very ill. It is not likely that all 3 of them will be with us much longer, and my grandfather's memory probably will need some help in the future. So we are making lots of pictures, videos and stories so that the kids will remember these years.