Take a normal, every day lunch box. Then:
>Add a smart thermostat and electric heating/cooling elements
>Make an iPhone app with a temperature control and alerts
>Add a relay to the lid to send you instant alerts if the lunchbox has been opened
>Alarm that can only be disarmed via PIN delivered by the owner's voice and only the owner's voice
>Slap on a fancy logo
>Add a store to the app to sell lunch supplies like bags, plastic forks/knives, napkins, etc. and also lunchbox accessories and peripherals as a subscription service
Trillion dollar idea? Guaranteed.