The tree costume was very easy to make. I wrapped a box in brown felt and then attached a large piece of Styrofoam and covered it in leaves from the craft store. It got a ton of compliments and after a while he figured out how to walk around in it.
"Homemade Owl in a Tree Costume [Glued] fabric that looked like a tree trunk...to cardboard...cut holes for her head & arms...hot glued stems with leaves on...[used] iron on Velcro strips to close the back...so it would make easy access to put it on & take it off. The mask was ...an assorment of brown, tan, black and white feathers...glued...to a mask that was purchased at the craft store."
Leaf Garland Costume - We copied the leaves of maple, oak, ginkgo, sassafras, and birch trees for this autumnal getup, but you can use any leaf shape you wish. Leaves made of crepe paper. Martha Stewart