DS (age 2.3) loved to hide his bottle. We looked all day for it and couldn't find it. Well he put it in the new potty seat we bought (haven't used it yet as we will start potty training him after the holidays)
DD (age 1.2) just stated hiding things. This week I got a cooking pot out to cook and noticed in there her toys..
My kids have hide so many things I gave up looking and I asked him where it they didn't know what I wa talking about. 