You can buy anything you want, clothes, food, toys or weapons, it can give you anything you want. It’s great if you want to learn how to create more advanced and functional structures.
There are several options you can choose from based on which item you want back in return. Place a minecart on the rail and then push it in the hole.
Based on which wool you decided to get back (in our case purple wool) such sheep will be sent on a minecart through the wool removal process.
And as you can see. A purple wool was returned. The green wool was from before.