Feet.
Spats were covers for your shoes. These were worn by the military and was a fad for the swing dancers of the 1930's or so.
You wear spats on your boots/shoes.
no
Spats are a protective covering popular in the early 1900's for fancy dress wear. They button on the outside edge of the material and are designed to "dress up" boots to make them look like dress shoes. Some spats had a strap across the instep to keep them in place over the top of the shoe.
feet
On your face
Around your waist
You would wear it wherever you would wear a tuxedo. A cumberbund is part of the formal wear attire that is an accessory to the tuxedo. & it is worn, by men, around the waist.
The head because it is a hat.
On your head. It's a hat.
Spectacles is another name for glasses and you wear them on your face/head
A knight would wear a suit of amour to protect his body in wars or jousting. His props were a steel sword and shield, to also protect his body
You wear spectacles over your eyes like glasses. They are like monacles, but for both eyes.