One thing I've done is to create areas that little K can get into things and explore. I placed a basket that has jingle bells on it full of Christmas books next to her toy area in the far corner. I will admit it gets a bit much with the jingle basket but, she does enjoy getting her books out. I also had a whole collection of old decorated tins and boxes. I used to put these in out in our breakfast nook, but decided they would be just the thing to get her attention. So I filled our book case in the living room. The book case has become pretty empty over the last several months as she likes to get everything down off it anyway. She seems very intense with the tins at times, placing them on top of each other and trying to put things into them.
We placed the tree in a different corner than usual as the other corner has her toy shelves. I thought that it wouldn't be good to place the tree where she has spent the last 6 months getting her toys. She has been really good with the tree, for the most point. We've had a few emotional breakdowns with the 'no's' about pulling on the lights. We don't really have ornaments on the lower limbs. Though now we have an odd collection of her favorite ornaments which includes a picture frame ornament, a snowflake, Santa dog, and a star made by my niece. Its pretty fun to hand her an ornament and tell her to go put it up on the tree. She typically will do it and hangs it so gently, though moments later she is pulling it off as if it is attached with super glue.
I love to glance into the living room from the kitchen and see her stack up Christmas tins and walk around with one of her favorite ornaments. She also likes to take her books and flip through them in front of the tree. E will call up from downstairs and ask what K is up to and I simply state, "Oh, she is busy undoing Christmas right now."