

Because you're gonna need something to put all those cocktails in.
Fits in your wallet, unlike all those coins from Gringotts.
Set of four, obviously.
Can be personally engraved.
Set of two.
To keep your can cold, like when Dementors are in the room.
For lemons, limes, mandrake root, whatever...
Set of four.
Price is for a set of four.
Set of six.
For mixing up magic, of course.
The price is for one glass, but truer words have never been said.
Set of four, one for each house.
Don't 'ditch this one, amirite?
Set of 7.
Mop up that mess yourself, because no house elf is about to do it for you.