Minecraft, quite possibly the most impactful game to come from the 2010s, is heavily centered around player creativity in construction, as well as exploration, both above ground and deep below.
Farms are an essential part of Minecraft, especially in Survival and Hardcore mode. They can be a constant source of food and resources. Expand the definition a bit and we can also include experience.
XP remains one of the most valuable resources in Minecraft 1.21, but the best farms for experience also gather important materials for you to use.