Dimensional Pockets Mod adds to Minecraft the Dimensional Pocket, which can be entered by a right click with an empty hand. Sneak-right click a wall, floor or ceiling inside the pocket to exit it. You can build stuff in it, for example a storage room or a small base. If you pick up the Dimensional Pocket you can place it down elsewhere, the content will remain. You can even place a Dimensional Pocket inside a Dimensional Pocket.