A perfectly proportioned onigiri carry case protect your lunchtime onigiri rice balls with this handy onigiri shaped bento box big enough to hold one large onigiri this beige coloured bento box is sealed up with clips on either side to make a well formed onigiri simply press a sheet of nori seaweed or whatever other outside covering you wish to use into the bottom of the box being careful to leave some sticking out over the edge completely fill the rest of the box with rice fold the