I was at the Marukai Wholesale Mart in Honolulu yesterday and found a large assortment of bento tools and accessories. The wheel cutters, pictured above to the left, are very versatile and come with a great instructional booklet all for $12.99. I already had a set of these which I still use quite often! The cutters to the right were $2.89 and come with a stencil as well as the cutters. When put together you can make the whale bento as pictured on the package.
In addition to the cutters, I found these musubi molds! The set on the left consisted of a plane, car, boat, and train mold for $9.97. The set on the right had a rabbit, elephant, lion, pig (or cat), and a dog mold for $12.99. They also had other bento accessories available but these were the only ones that I had picked up.