Mimics...
Rogue: I see a cupcake on the ground
DM: The cupcake growls at you.
Rogue: ITS A MIMIC
DM: The mimic attempts to attack you and bite your hand.
Rogue: Rolls: 18
DM: The mimic falls off your hand
Rogue: Places an apple next to the mimic
DM: The mimic looks at the apple and falls in love. The cupcake and the apple now live happily ever after.
Rogue: Can I come to the wedding?
DM: No because you tried to stab it.