The Alpha Xi's at my college each get a teacup & saucer from their big when they initiate. It is displayed until they graduate, then stored. Once the girl gets married, they give it to her.
My KD chapter does the garter thing. We get a garter from our big to wear for rituals, then wear it for our wedding. I found mine recently to get ready for my big day!!
Kappa Delta has lots of beautiful wedding traditions. There is a website (a public one, I believe) that outlines them. Maybe kdonline will give the address? (my mind is going today)