Through the Letter Slot

That gap at the bottom of the front door was calling my name, so I slipped right underneath into the carpeted hallway! Halfway down the corridor, a bright brass mail slot in an apartment door caught my eye. I had to test it! Standing on tiptoe atop a bristly coir doormat, I jammed my newly found allen wrench right into the flap's hinged edge to prop it open. A cool draft from the empty apartment whistled through, setting my shoulder rotors spinning with a sharp whine! Before the heavy brass flap could slam shut, I slipped the little neodymium magnet right under the lip to keep it unlocked for my next run.