One of the things that has really bugged me about being pregnant is that suddenly everything is about the baby, to the point that at times I've felt like my sole identity is that of 'mum to be' which can be very erasing. She's still a person in her own right, and I can't speak for her directly, but for me getting gifts that are about me, and not just about the fact that I'm pregnant, has been really important to me. Also it really drives me nuts when people buy stuff actually for the baby as a birthday or christmas gift for me. They mean well, but they don't do that to my DP, so why do it with me?
I would consider getting her the kinds of things you would buy her if she wasn't pregnant (being practical about it, a bottle of wine is probably not on the wish list at the moment). Take the opportunity to show her that you still see her and who she is as a person, and that you still value that part of her, and not just her as mum to be.
For me, on my wish list are things to do with my hobbies ( I like to knit and cross stitich so books, patterns, and storage stuff for my gear), cook books, novels, perfume and luxury toiletries, chocolate, pyjamas and socks, new slippers, all typical stuff. None of it baby or maternity related.