This is a device from a story written by a friend of mine. In the story, an inventor tries to create a 'microwave'-like device (for the record, he does not condone any comparisons to microwaves) which will increase the size of food in order to end world hunger. Not to spoil the story too much, but it goes horribly wrong . . .

The model has a working hinge for the door, and a 'secret compartment' which should be able to be opened after printing. Don't get too excited about what's inside the secret compartment, it's not all that interesting, but I still don't quite want to spoil the surprise. If you want to spoil it for yourself without printing, just open it in meshmixer, separate shells, and delete stuff until you find it.