Where did he go?!

Where'd he go this time??  This is the question I am asking myself at least 20 times a day.  For the last month or so, since Caleb started crawling, I turn around for a second and he is gone.  And almost every time, I find him in his sister's toys with a huge smile on his face.  I don't think Samantha appreciates it too much, but I think it's adorable!