My mum is a chef and has hundreds of receipes all over the house which she can never find when she wants one so I have bought some nice notebooks and plan to put all her receipes in them. I've got 4 books for starters, main courses, puddings and baking and will alphabetise them all so she can find them easily.
I also bought her a digital camera and a DVD of a film from the 1930's with her second cousin in it.
Most mums love clothes, maybe a nice cashmere jumper or give her tickets to go with you to a show or concert after xmas