This is actually not a pile of sticks! After a bit of research, we think it is a Bag Worm’s little house that it makes out of pieces of wood. It uses it to fool predator that it is a pile of sticks. How sneaky!
This photo was taken around the Cairns area. Unfortunately I don’t have any other details.
Contact me if you have more information on confirming the identity of the insect that creates this great construction.