Key 1: A half orange, half black key appears at your doorstep. The key appears to be freshly painted and plastic.
Key 2: A similar key to Key 1, with the same shape and material, except that it is half orange and half white.
Key 3: A piece of confetti is stuck to a bright-coloured key. What could it be from?
Key 4: A shiny bronze-coloured key is found in your mailbox. It's plain and has the shape of a regular, ordinary key.
Key 5: You see a dirty key covered in dust from the deepest corner of your attic. You reach in to pick it up, and pull out the key and some cobwebs.
