ON THIS WIKI
The Display Case (or Lined Case) can be used to display items and can placed either on the ground or on a wall, and will rotate accordingly. Putting a redstone block in it will cause it to emit a redstone signal.
An important note on the usage of the case: the case door can be toggled by shift clicking with an empty hand. The case must be open in order to add an item to the case. When the case is open, if the player is holding an item, right-clicking will place the item in the case. If the player has an empty hand and right clicks, the interface will open. Right clicking while there is an item in the case will cause the item to pop out of the case.
The Display Case can be made from any of the 4 different vanilla wood slabs and will look like the wood that is used. Wood types cannot be mixed. The wool in the recipe can be red, blue, green, or black, and will show the appropriate colour in-game.