I really like to add a little Christmas to the kid's rooms. Just a little touch here and there does the trick. At least we think so.
In each of their rooms I added a small tree which is decorated with "special" ornaments. My daughter really loves to decorate her own tree, my son is a little young to decorate yet. We have added a mixture of store bought ornaments, toys and a few handmade ornaments. In the past when I didn't have very many ornaments I added a baby cup, baby spoon and rattles. Of course each year some get broke but that what happens with kids. Last year she broke the wings of all of her fairy ornaments, thank goodness for E6000.
Since I don't have a mantel, I put the kids stocking in their rooms. I hope in a few years, this will buy me some more sleep on Christmas morning. I added a little Christmas decorations to their doors too. And we couldn't forget to display our beloved reindeer. My daughters favorite stuffed animal. I hate to even count how many hours I have spent looking for reindeer. Yes that is her name.