Note the handsome and functional feet to keep it dry and the three entrance/exit holes at the front.
The Correx is magical, lightweight stuff. Can be cut with a Stanley knife and bent at 90 degrees without breaking. It glues to wood using a contact adhesive.
Note the lid hinged with duct tape and the retractable ventilation panel - which can be retracted to put a packet of fondant on top.
Note staples in side - not its best feature, but correx seems of with it. I though it might split.
Cost all up - about £10 (€11 and rising!). Tools required: craft knife, saw, drill, steel measure.
Benefits: light, cheap, dark inside, dry.