User:MentalMouse42/Sandbox/Misc Diagrams 1

Tiny Charcoal Generator
Source]

It's supposed to feed its product back into the furnace to fuel itself. However, it was an April 1 (2013) posting, so it warrants testing. At first test: Looks like it will not accumulate any charcoal in the chest until both the furnace and the hopper feeding it fuel (level 2) are full. The hopper can be "stuffed" with four non-fuel items in its last four slots, as long as you leave the first slot open for fuel. Then the chest will start getting charcoal after two stacks of charcoal are produced, which will require 2-$1/4$ stacks of wood.

If more than 5-6 stacks of wood are available, another chest can be placed atop the upper hopper.

As usual, using a hopper to take product from a furnace forfeits any experience from the smelting.

Chicken Farm
This 3&times;4&times;3 mechanism can be set into the floor of an egg farm that feeds to a single point. Design 8 above works well. The topmost hopper should be at the collection point, under a half-slab and pillar to keep the chickens out. You would then extend a roof from the top of the central pillar, over the dispenser with a block or two to spare.

Turning on the lever disables the clock. With the clock disabled, incoming eggs etc. will fill first the bottom dropper, then the bottom hoppers, then the chest, and finally the intake hopper. This gives a total of 52 stacks storage, or 79 with the optional second (large) chest. (A lever on or next to any of the hoppers, will let you turn off the flow there, if you want.)

The dispenser is purposely separated from the collection hopper/central pillar, to allow for the dispenser's variable aim (and hopefully cut down on chickens in the hopper).

Making this from scratch will cost 22 cobblestone, 3 smooth stone, 15 iron, $10 1/2$ logs of wood, and 8 redstone dust.