I've done it in the format that same of the numbers represent the amount of times she has done something for me - albeit a rough estimate and the other numbers are just there cos it's a bingo card.
Thought it would be a different spin on Mother's Day, as she is still a mother but she's definitely like a second mother to me more than a grandmother. She has been told, this is her Mother's Day gift! - of course it's not but who would I be without a little wind up.
Have you got anything planned or purchased for the special mother in your life?