I'm sure someone has mentioned this before, but ideeli is a flash sale site that has new deals every day, and fairly often things pop up that would be perfect for a wedding.
Today, if you go to the Carolee sale, there is lots of pretty, sparkly, vintage-y jewelry to go with blue, pink or gold wedding themes -- I got the champagne chandelier earrings since one of my main colors is champagne.
I'm also admiring the $37 Mikasa 45-piece casual table settings... I would totally snatch one up if people weren't already getting me dishes from our registry...