To do this craft I first blew up a small balloon and then mixed 2 parts elmers glue to 1 part water.
Zeke and I took pieces of yarn and first dipping them into the glue solution (making sure they were well coated) commenced to drape them over the balloon at random.
Once we felt like we had enough yarn, we left the balloon overnight to dry. It took a full 12 hours for the glue to be completely dry, and then we popped the balloon.
For a final touch we added a bit of green wool and a fake egg.