make them then... cant be that hard... shit take a stick of butter freeze it, put it in plaster of Paris make a mold... then just put plastic wrap in the mold and pour your butter in, put in the fridge and bam.. you could even put an insignia in the bottom of the mold for your brand or a saying 'its all about the shape'
very simple method but you get the idea... wouldn't be to hard to fab up a larger mold just get the dimensions and make it out of wood.. find someone with a plastic vacuum forming machine, and make the female component of your mold.. then you could make runs of ten at a time... and still get the insignia and your boss would think you where the man for thinking of it.