You can start a tradition that you do every year. My kids are older but we still do the same things we did when they were little.
Christmas Eve we bake cookies so we can leave them for Santa. They get to open 2 gifts, an ornament and a new pair of PJs. When they were little we would spend Christmas day in those PJs since we didn't do any traveling or have visitors.
They range from 15 to 20 but they all still get excited about those gifts.
Make sure you track Santa on the Norad site, it helps get them into bed
On Christmas day just enjoy it, there isn't really much you can do that can be wrong, except maybe not having enough batteries LOL
It's such a magical day when you have little ones, I do miss those days.
I don't have have much of a wish list this year, we have some large purchases coming up in the spring so I'm not asking for anything under the tree. However I did get myself some little things I wanted