As others mentioned, art supplies, baby dolls, lego duplos, books, and puzzles are great for a two year old.
Also, I sell Discovery Toys, and have a couple of unique toys that you can't buy at a regular toy store that I know kids her age love.
One of my son's favorites is Roll & Play. It's like a first board game, where you roll a large ball/die, then choose a card and do the action on the card. He is turning 3 soon and still loves to play with it. Your daughter can play with you or with her brothers. http://www.discoverytoyslink.com/esuite/control/product?P...
He also loves the Place & Trace Puzzles. They can be used in so many different ways: you can trace the outline of each shape, or trace inside the tray once the shape has been removed. You can use them as cookie cutters with playdoh, and of course as a puzzle. Check it out here: http://www.discoverytoyslink.com/esuite/control/product?P...
You can view all my toys through my site. Happy birthday to your daughter!
K.
http://www.discoverytoyslink.com/karenchao