50 Cent Piece Biscuit Cutter

My wife was making some healthy biscuits for our boy, but wanted a biscuit cutter that was smaller (the baby foot shaped cutters that I've uploaded as http://www.thingiverse.com/thing:329932 are just a bit too big).
I asked her what kind of biscuit cutters she wanted... I could include a stamp in them to print letters on the biscuits; I could make them slot together to make 3D biscuit puzzles; I could make animal heads and bodies that fit together like jigsaw puzzles and can mix and match...