3D work in portfolio for college app question

Hey all,

I unfortunately missed the deadline for North Carolina state for fall 2009, so I thought I’d start my portfolio for the next year. They want examples of 3D work, but I’m not sure where to go. I designed and created a car out of clay, and I’ll make a few more for practice, but what else can I make with clay? I feel dumb asking these questions… Are most products made in clay before they’re produced? Cars are the most obvious for clay, but what else is there?