For my sisters new family they bought all the boxes Tupperware only which are using in kitchen to use for storing rice, dhal, powders like that .Because we are using boxes and water bottles form so many years, it is a trusted product. No matter of leakage and so strong products.
Cost is high but no need to think about alternation several years. They are giving bags along with lunch boxes and we may get so small size box to big boxes in different attractive colors.