Build an automatic egg farm in Minecraft: a tiny redstone-free chicken coop where a hopper floor collects every egg into a chest.
Chickens lay an egg every 5 to 10 minutes. If the coop stands on a floor of hoppers, the eggs drop straight into a hopper and travel along a hopper chain into a chest. No redstone is needed. The coop is fully enclosed so no chickens escape and no monsters spawn inside.