What was on the tree when they thought they found george?

right, it was (in reality) some kind of cheap halloween decoration.
i think the implication from the movie was that it was some kind of animal body parts, or maybe a human body part (like those found in the tent).

i could be wrong, these are just my ideas. good luck!

It was actually whatever we had laying around the shop. ZERO budget.
We nailed a latex form with rib cage to a tree, dressed it with blood and stuck a dog skull on it. wee.
Low budget ... what can I say?

:) But we're going to make another one and do it right!
It's in development now with actual money.
Stay tuned. We're going to make it up to you! ;)