Here's a collection of cookie cutters I've designed with CookieCutter-Editor (http://www.local-guru.net/blog/pages/cookiecutter-editor).

Print, cut the dough and bake! Yummy :)

There's a nice write-up how to make your very own shapes with the tool I've used: instructables.com/id/Making-3d-printed-cookie-cutters-Dr-Who-Charact/

Or simply press "h" for instruction.

Special thanks to my flat mate Florian (http://www.thingiverse.com/flouSH) for letting me play with his Ultimaker ;)

If you want to follow our upcoming 3D-printing project feel free to subscribe to the newsletter at hypecask.com

PS:
I like the hand cookie cutter the most! So many opportunities to arrange the single fingers! Have a look at the pics;)
PPS:
Note that there are two versions of the Ultimaker Robot: The lite version and the normal version with more details.