What do you get your 91 year old Mother for her birthday?

She never wants anything, doesn't need anything. yells if you get her something.  But how do you not get your mother a birthday gift?  So, as keeper of the old family photos, I came upon the idea of framing a picture of her siblings and her Mother.  Sadly, there are no pictures of my Grandfather where you can actually see what he looked like, so this is the best I could do.  What do you think?