Shades

While in New York, William found a pair of sunglasses that my sister had gotten from "Build a Bear" years ago. They were the perfect fit, and he was thrilled with them. He would not take them off - for anything. It didn't matter if it was so dark that he couldn't see, he would just continue running into walls so that he could look like "hot stuff" in his shades. The other boys wanted his glasses too, maybe that's why he realized he had such a prized possession, and the rule here is once you put a toy down, it's free game for the others.

He left them on to brush his teeth

He left them on at night
He left them on while boating (these are actually glasses that his brother convinced him to trade for a short time)

He left them on while bathing
He couldn't eat without them (notice the noodle on his head)
But he did look quite cool with them on