Bench is a very useful item and the player can use it to sit. They can be placed anywhere on the ground. This guide will tell you multiple methods to make a bench.
In order to make a bench, place two oak slabs on to the ground and oak trap doors on all the sides of slabs except one, as shown in the image below.
Spruce wood can also help you to make a bench. Place three spruce planks on the ground and spruce stairs on either dies as shown in the image below. Fill the gap at the back with spruce planks to make a complete bench.