A box is as mysterious as the Bermuda Triangle, like entering a hallway of fears. Suspense-cube.
A house is as pointy as a knife, like walking on the edge of a cliff. An Empty castle.
A pot is as confusing as a puzzle, like a bowl full of surprises. Metal-maze.
A crystal is is as precious as a baby, like a guardian angel. Hidden-gems.
A book is as suspicious as a Sherlock Gnomes case, like hearing sounds in an alleyway. Written-cases.