I do not at all expect a gift but what girl doesn't like one. Airline & Car rental certificates.
My favorite is the e-gift certificate from Macys.com
Godiva Chocolates... Mixed and Coconut Truffles are my favorite. Scented candles of Vanilla or Mango are awesome. Gift cards are always thoughtful.
Once again gifts are not expected, so please do not feel compelled to bring something.