if you want to get her something just for herself then maybe make her up a parcel of foods that she had to avoid when pregnant ie pate, nuts etc.
get her a book that she can lose herself in when she has any moments to herself, some nice bath products, candles, a miniature bottle of wine. all things to give her a relaxing night in.
4getmenot their ace!!!!!!!!! My sister who lives in Oz is expecting her first in September and I am sooooo going to buy one of those flower buds! What a cool idea! Thanx for that link consider it saved to favs! :o)