We've found this particular Teal colour carry case popular for storing Wedding Favours for guests, you can use it for anything. It's handy for storing small toy figures, small items in the car or could even be used for keeping your Craft or Sewing kit items stored safely.
OR
Buy them for your children's lunch and if it is broken during school time, you will have plenty more. No need to go shopping for lunchboxes ever 2 days!