Now for Ezra's costume. I love me a good paper maché costume. It's cheap, it's easy, but it certainly does not store well. This, in fact, did not really survive the night. A 2-yr old and paper maché aren't exactly a great match. But I do have suggestions for making it work, below. Mike Wazowski from Monsters Inc.
My kids both loved the costume, and Ezra loved wearing it, despite his lack of maneuverability. And that' all that really matters, isn't it?