How To Make a Cobblestone Generator to any Ores in Minecraft - Using Command Block - YouTube
GitHub - LukeGi/Simple-Cobble-Generator: Minecraft mod that adds a cobblestone generator. Will be a part of SimplyRandom from 1.13, no longer stand alone.
How to Make a Cobblestone Generator in Minecraft : 4 Steps - Instructables
CobbleForDays Mod (1.19.2, 1.18.2) - Simple Cobblestone Generators - 9Minecraft.Net