I think that while mithril, the most coveted material in the game, is renewable, that all of the more commonplace items should be too. How mithril is renewable doesn’t even make sense, making mithril into a metal was discovered after Utumno fell, and dwarf miners would have as much chance of having mithril as the common Gondor citizen. And while black Uruks have a way to get mithril, they wouldn’t have as much as a chest plate. So with mithril not making any sense, or very slight sense, shouldn’t things that do make sense be renewable such as bushes and sand and edhelmir. So, all plants should be able to be made on grass out of bonemeal in the eight biome. Second, all blocks such as ores (not mithril) and gemstone ores should be renewable, sold by miners and traders associated with ores, and sand should be able to be made by putting 9 flint = 1 sand or 1 sand and 8 flint = two sand into a normal crafting table. And more gravel made by millstoning cobblestone. Mithril ore, not sold by traders, will be renewable by putting a bucket of lava and water and a mithril ingot in a vanilla crafting table. Blocks such as the middle earth rocks will be made with lava pouring onto water in the right biomes (this would make sense because the minerals in the water would form normal Rohan/Mordor/Gondor rock while the water evaporates.) Edhelmir and other mineral like items will be sold by traders such as the Lindon blacksmith or orc traders and dropped by them too. Thanks for reading! Please kudos, we need justice for the under appreciated materials, blocks and items!