Small automatic lighting
This is the smallest possible fully automatic lamp in Minecraft without mods. At night the left lamp burns, during the day the right. You can also omit the right lamp.
Fully functional spaceship
Flying spaceship armed to the teeth, ready to destroy entire worlds.
Automatic station
A small simple station, but which automatically collects trolleys and sets them again at the push of a button.
Semi-automatic grain farm
If you pull the lever, the grain is automatically harvested and flushed to a collection point, where you only have to collect it. After that you have to replant the grain.
Automatic pumpkin / melon farm
The cobs automatically harvest the pumpkins or melons and push them into the river so that they are flushed to a collection point.
Automatic sugar cane farm
This farm automatically harvests sugar cane without you having to do anything yourself.
Daily pulse generator
This circuit emits a short signal once a day (here the piston on the right). This is e.g. practical for automatic farms.
Semi-Automatic Cocoa Farm
At the push of a button, water comes out of the throwers, which flushes the cocoa plants to the exit. After that you have to replant new cocoa.