We can make packed dirt out of dirt, and cobblestone blocks from raw cobblestone. But where's the bricks from clay, for example? Or concrete for that matter (not counting stuff robbed from other places, but a self-craftable type of concrete). Or "blocks"/"bricks" of about any type of material that could feasibly be used for sucha purpose (be it metal, types of stone, or ice cubes). Not something critical, there's bigger issues to be dealt with... but I kinda would like to build a jet black obsidian castle one day
