When Millie got her set of princess barbies a couple Christmases ago, we hid the shoes and crowns that came with them. We were pretty positive Millie wasn't old/responsible enough to keep track of them, and Max was sure to eat them when found. I finally got them out recently and she has been over the moon about it!
After seeing old home videos of Millie sliding down the air mattress, the kids wanted to do it again. Just as fun this time around!
We inherited a bunch of toys recently, which I made the mistake of bringing home while the kids were awake. Max has been especially enthralled with a set of train tracks and we have had a lot of fun bringing them everywhere with us. He calls them "tain tacks" which I think is pretty adorable.