Bridle
It's called a Tiara. Some brides will wear the Tiara or perhaps flowers instead. 'Tiara' is pronounced (Te ara) A veil
The thing on the angel's head is called a halo.
it is called the crest
he wears it because he is a ship mechanic and owns a ship
No he does not; the only thing he wears on his head would be his wig.
The thing on top of Toad's head is called a Mush.
An apple fell on his head and wonder why it was pulled to earth
it is called a death mask
A "lure".
Newton's amazing conceptions of the laws was inspired by an apple hitting him on the head which gave him an accurate conception about an invisible force called gravity.
The tall and pointed head gear is called a mitre while the small 'beanie-like' cap he wears on the back of his head is called a zucchetto.