Hopper

Hopper adds hoppers to Minecraft!

Hoppers are an easy-to-use, simple system for transporting items between chests. The Hopper is crafted with a chest and 5 iron. If it's not powered by redstone, it takes items out of the container on its top face (or collects items lying on the ground in that location), and deposits them into the container it's pointing at. The hopper can also be placed upside down, for adding items into the fuel slot of a furnace, say.

It also adds a Block of Redstone. In the world, it's a piston-pushable, solid-block redstone power source. As an item, it acts as a convenient storage block for all that redstone dust you have lying around.

But I thought Minecraft already had those ite-

What? No it doesn't.