The gum-leaf skeletonizer caterpillar wears its old molted heads on top of its head, which it uses to bat away predators. – WTF Fun Facts
Source: Weird caterpillar uses its old heads to make an elaborate hat | New Scientist
WTF Fun Fact – Gum-Leaf Skeletonizer Caterpillar Hat
Now that’s using your … oh nevermind!