Lever

A Lever is an item that was added in Update 0.13.0. They can be placed on any fully opaque Block, or on the top of any upside-down Slab or upside-down Stairs and are used to power Redstone items. It can also be placed in any direction. They are Crafted in the Player's crafting section.

Uses
Levers, when flipped, send a redstone signal that will activate most Redstone-Related Blocks, such as Iron Doors and Lamps. Levers can also be used for decorative purposes.

Crafting
1 Stick + 1 Cobblestone => 1 Lever

Trivia

 * Levers can sometimes camouflage with Cobblestone since their textures are similar.
 * Unlike Buttons, Levers will produce a permanent energy signal until they are switched off.
 * Using a Lever on a T-shaped Minecart Track will cause the curving Rail to switch.
 * After Update 0.15.0, Levers now generate inside Jungle Temples.