Forgive me; I can't remember if you're in China or not. If in China, do you have a Watson's nearby? They're good for lots of beauty products. Feminine stuff she might not spend the money on to buy for herself - bubble bath, moisturizers, perfume... Depends on what she likes. I always enjoy receiving books, but I'm a reader. DVDs of Christmas movies. Munchies make good stocking stuffers - again, depends what she likes: chocolate, other candy, peanuts,... A gift for both of you - lingerie
If money is an issue, coupons for future favors (bedroom favors
, or more mundane like washing the dishes, painting the living room, a trip to the zoo). If you are good at matching sizes, colors and styles - new clothes like a sweater or blouse. My dad always copped out of this one. He gave my mom money and told her to go buy what she liked.
So subjective. Without knowing your wife it's really difficult. I like to receive new stuff for the kitchen, but my former sister-in-law would have killed my brother if she received a gift for the 'house'. Had to be just for her.