This model was a finalist in the wedding contest: a Sierpinski tetrahedron made with hearts instead of triangles.
It comments on the complexity of a relationship, how it's not just about big things but also about lots of little things...
Inspired by xkcd: http://xkcd.com/543/
There are 204 hearts in total.
This version stands about 8.5 cm / 3.4 in tall.