gift for my mother?
something I do for my mother every year for mothers day (this might be a good idea for you christmas wise-) is a framed picture anything that you think might mean something to her. Of you, or her, of another sibling, special event... anything. Good luck, and hope I helped.
Well, without knowing your mother, it's hard to say.
You know her better than any of us, why don't you try to think of the things she enjoys and get her a gift from the heart as opposed to something somebody on the internet told you to get her?
Take her out for dinner..god knows she deserves a night off.