Woodland tree stump with an owl or fox hidden inside. Completely submerge the stump in water and leave it for four days. Check back regularly and you'll notice a woodland creature starts to grow from the top of the stump, either an owl or a fox. Wait the full four days to discover the fully grown animal sitting atop the tree stump.
Novelty growing fox or owl
Submerge tree stump in water
Fox or owl grows over four days