Piston elevators can be made in many different shapes and sizes. They do have a few items that are always necessary. Slime blocks, sticky pistons and some sort of redstone trigger are necessary. The ...

The easiest ones are probably a button or a lever, though the pressure plate and tripwire hook will make it a little more automatic. Obviously, pistons will be necessary, but so will slime blocks.

First, place 3 obsidian blocks on the first ground. This will be where your elevator stop. Repeat this one more time on the second floor. Remember that those 3 blocks on each floor need to be at the ...