Ordinary half-heart necklaces are boring. You get a half, and it will fit with any other half of the same mass-produced necklace!
Enter the Combination Heart necklace. Every set is uniquely generated by a Blender script -- there are over a half-million possible necklaces! Add your and your sweetie's initials, and you get a 100% unique necklace that will only mesh with the one you love.
Necklace cord not included.
A steampunk-themed medallion is also available here: www.shapeways.com/model/204106/combination_medallion.html
Thanks to José I. Romero for an insane amount of work on this design.