All you need is a plastic utility tote, which may be found at your local dollar store in the storage section or even in a craft store. Santa Claus brought one for my roommate for Christmas to organize her craft supplies.
Then, pack whatever snacks you like in the compartments. Little bags, little boxes, bottled drinks, etc. If taking your snacks or lunch to work or school, take a refillable water bottle to keep refilling from the water cooler if you have one. Save more money yet!
I hope you have found this YouTube video to be inspiring!