Mirror

The mirror takes two blocks of height and is 4 pixels deep. It stands at the back edge of its block with the glass toward whoever places it, and it needs no wall: lean it against one or leave it free-standing. Breaking either half removes both and drops one item.

Up to 6 players and tamed pets are reflected at once, with their outfits and animations, cut off exactly at the glass, over a reflection of the floor. The room itself is not reflected. Since 0.3.0 a player behind a wall does not appear in the mirror, so it is no use for looking around corners.

Right-click opens the same Outfit screen as the button in the inventory.