I really really hope you find them!!! When DD was 3 she liked to 'hide' things.. Once when my wallet and keys were missing I asked her (in a very playful voice)If you were going to hide this, where would you hide it. ANd asked her to go hide it for me (a pen or something non significant) and followed her...she had a stash of stuff pushed back under her dresser....including my keys, wallet and sunglasses I thought were long gone.

I think Christy K's key's once ended up in the kids wagon (Sorry Christy! Still one of my fav posts ) .... Check everywhere (freezer too)