Banana peels are also called banana skin and is the outer covering of the banana fruit.
They are used as food for animals, in water purification, for manufacturing of several biochemical products.
Banana peels are sometimes used as feedstock for cattle, pigs, goats, rabbits, poultry, fish and other species usually on small farms near where bananas are grown.
They are also used for jokes and comical situations.
There are several methods to remove a peel from a banana. (source)
So can hamsters eat banana peels?
No they can’t, they are not good for hamsters to eat.
There are much better foods for them to eat.