What should I do for my mother's 50th birthday?

Its coming up very soon (12th), so I dont have much time!
My mom has always been the one I look up to and respect her. I love her more than anything in the world!
Since it is her 50th birthday, I want to make it special! My family doesnt do much for each other on birthdays, but im thinking since its her 50th, it should be something more exciting!
She doesnt like me spending a lot of money for her, so whatever it is cant be very pricey. She doesnt have too many friends.

What should I do?