For the red Angry Bird I bought a 5XL sweater and a 2XL for the black at the 1$ store, cut the sleeve off which then were used to make the hats, and filled them up with any type of filling and made the faces out of felt. For the yellow one I cut out 2 triangle pieces, sewed them together and glued a hula hula on the bottom. For the pig I cut off 2 big circles, sewed them together and filled it up with packing peanuts.

This is our Homemade Angry Birds Family Costume.