I found this web site by a happy accident. The jewelry is kind of pricey, but if a person was good with fimo or sculpy I bet they could make their own....
>http://www.creativeadornments.com/

how cute!
check out the links page they have a link to a store that makes pewter pendants of rice cookers, lucky cat, sushi... oh the rice ball (Musubi) are so cute.
>http://www.clayvision.com/japaneseindex.htm