I recently bought this little bento box for a small friend of mine, and I was rather overcome by its cuteness. It's also quite functional, with two small deep sections for rice and vegetables, or a sandwich and fruit. It's small, but big enough for a kid or a light eater.
4-1/2-inch L by 4-1/2-inch W by 3-1/8-inch H.
(Image credits: )