Just a small update - I bought some egg moulds (a heart and a star) on the weekend from the Japanese $3 shop in Cuba Mall. They have quite a few bento things now including the same bento box I got at the Y100 shop in Umeda station in Osaka, little weener cutters so you can make octopus hot dogs and picks for bentos!
They have heaps of Japanese food now too - even ramune lollies and okonomiyaki mix.
Anyone else know anywhere good in Wellington, or even NZ, for buying bento stuff?
I will post a pic as soon as I try the egg moulds.