Water elevators are a quick and easy way to travel up and down in Minecraft. They are especially useful in large builds or when you need to reach a high place quickly. Water elevators work by using the buoyancy of water to push you up. To make a water elevator, you will need a source of water, a way to get to the top of the elevator, and a way to get out of the elevator at the bottom.
There are many different ways to make a water elevator. One common method is to use a water bucket to fill a column of blocks with water. You can then use a ladder or stairs to climb to the top of the elevator. To get out of the elevator, you can simply jump out of the water at the bottom. Another method for creating a water elevator is to use a dispenser to place water blocks in a column. This method is faster than using a bucket, but it requires a dispenser and a lot of water blocks.