For Minecraft players experimenting with Skyblock maps, creating a cobblestone generator will likely be one of the first (if not the first) things they'll do to start accumulating resources.
Cobblestone is extremely important in Minecraft's Skyblock survival maps as it is often used to expand the player's home area into other biomes and locations. Without cobblestones, Skyblock players can easily stretch their limited resources and end up in a bad situation. Fortunately, creating an automatic cobblestone fountain is simple and can be done right away on any Skyblock map that provides a bucket of water and lava in your spawn starter chest.