(Source: https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/Material.html) ACACIA_DOOR ACACIA_DOOR_ITEM ACACIA_FENCE ACACIA_FENCE_GATE ACACIA_STAIRS ACTIVATOR_RAIL AIR ANVIL APPLE ARMOR_STAND ARROW BAKED_POTATO BANNER BARRIER BEACON BED BED_BLOCK BEDROCK BIRCH_DOOR BIRCH_DOOR_ITEM BIRCH_FENCE BIRCH_FENCE_GATE BIRCH_WOOD_STAIRS BLAZE_POWDER BLAZE_ROD BOAT BONE BOOK BOOK_AND_QUILL BOOKSHELF BOW BOWL BREAD BREWING_STAND BREWING_STAND_ITEM BRICK BRICK_STAIRS BROWN_MUSHROOM BUCKET BURNING_FURNACE CACTUS CAKE CAKE_BLOCK CARPET CARROT CARROT_ITEM CARROT_STICK CAULDRON CAULDRON_ITEM CHAINMAIL_BOOTS CHAINMAIL_CHESTPLATE CHAINMAIL_HELMET CHAINMAIL_LEGGINGS CHEST CLAY CLAY_BALL CLAY_BRICK COAL COAL_BLOCK COAL_ORE COBBLE_WALL COBBLESTONE COBBLESTONE_STAIRS COCOA COMMAND COMMAND_MINECART COMPASS COOKED_BEEF COOKED_CHICKEN COOKED_FISH COOKED_MUTTON COOKED_RABBIT COOKIE CROPS DARK_OAK_DOOR DARK_OAK_DOOR_ITEM DARK_OAK_FENCE DARK_OAK_FENCE_GATE DARK_OAK_STAIRS DAYLIGHT_DETECTOR DAYLIGHT_DETECTOR_INVERTED DEAD_BUSH DETECTOR_RAIL DIAMOND DIAMOND_AXE DIAMOND_BARDING DIAMOND_BLOCK DIAMOND_BOOTS DIAMOND_CHESTPLATE DIAMOND_HELMET DIAMOND_HOE DIAMOND_LEGGINGS DIAMOND_ORE DIAMOND_PICKAXE DIAMOND_SPADE DIAMOND_SWORD DIODE DIODE_BLOCK_OFF DIODE_BLOCK_ON DIRT DISPENSER DOUBLE_PLANT DOUBLE_STEP DOUBLE_STONE_SLAB2 DRAGON_EGG DROPPER EGG EMERALD EMERALD_BLOCK EMERALD_ORE EMPTY_MAP ENCHANTED_BOOK ENCHANTMENT_TABLE ENDER_CHEST ENDER_PEARL ENDER_PORTAL ENDER_PORTAL_FRAME ENDER_STONE EXP_BOTTLE EXPLOSIVE_MINECART EYE_OF_ENDER FEATHER FENCE FENCE_GATE FERMENTED_SPIDER_EYE FIRE FIREBALL FIREWORK FIREWORK_CHARGE FISHING_ROD FLINT FLINT_AND_STEEL FLOWER_POT FLOWER_POT_ITEM FURNACE GHAST_TEAR GLASS GLASS_BOTTLE GLOWING_REDSTONE_ORE GLOWSTONE GLOWSTONE_DUST GOLD_AXE GOLD_BARDING GOLD_BLOCK GOLD_BOOTS GOLD_CHESTPLATE GOLD_HELMET GOLD_HOE GOLD_INGOT GOLD_LEGGINGS GOLD_NUGGET GOLD_ORE GOLD_PICKAXE GOLD_PLATE GOLD_RECORD GOLD_SPADE GOLD_SWORD GOLDEN_APPLE GOLDEN_CARROT GRASS GRAVEL GREEN_RECORD GRILLED_PORK HARD_CLAY HAY_BLOCK HOPPER HOPPER_MINECART HUGE_MUSHROOM_1 HUGE_MUSHROOM_2 ICE INK_SACK IRON_AXE IRON_BARDING IRON_BLOCK IRON_BOOTS IRON_CHESTPLATE IRON_DOOR IRON_DOOR_BLOCK IRON_FENCE IRON_HELMET IRON_HOE IRON_INGOT IRON_LEGGINGS IRON_ORE IRON_PICKAXE IRON_PLATE IRON_SPADE IRON_SWORD IRON_TRAPDOOR ITEM_FRAME JACK_O_LANTERN JUKEBOX JUNGLE_DOOR JUNGLE_DOOR_ITEM JUNGLE_FENCE JUNGLE_FENCE_GATE JUNGLE_WOOD_STAIRS LADDER LAPIS_BLOCK LAPIS_ORE LAVA LAVA_BUCKET LEASH LEATHER LEATHER_BOOTS LEATHER_CHESTPLATE LEATHER_HELMET LEATHER_LEGGINGS LEAVES LEAVES_2 LEVER LOG LOG_2 LONG_GRASS MAGMA_CREAM MAP MELON MELON_BLOCK MELON_SEEDS MELON_STEM MILK_BUCKET MINECART MOB_SPAWNER MONSTER_EGG MONSTER_EGGS MOSSY_COBBLESTONE MUSHROOM_SOUP MUTTON MYCEL NAME_TAG NETHER_BRICK NETHER_BRICK_ITEM NETHER_BRICK_STAIRS NETHER_FENCE NETHER_STALK NETHER_STAR NETHER_WARTS NETHERRACK NOTE_BLOCK OBSIDIAN PACKED_ICE PAINTING PAPER PISTON_BASE PISTON_EXTENSION PISTON_MOVING_PIECE PISTON_STICKY_BASE POISONOUS_POTATO PORK PORTAL POTATO POTATO_ITEM POTION POWERED_MINECART POWERED_RAIL PRISMARINE PRISMARINE_CRYSTALS PRISMARINE_SHARD PUMPKIN PUMPKIN_PIE PUMPKIN_SEEDS PUMPKIN_STEM QUARTZ QUARTZ_BLOCK QUARTZ_ORE QUARTZ_STAIRS RABBIT RABBIT_FOOT RABBIT_HIDE RABBIT_STEW RAILS RAW_BEEF RAW_CHICKEN RAW_FISH RECORD_10 RECORD_11 RECORD_12 RECORD_3 RECORD_4 RECORD_5 RECORD_6 RECORD_7 RECORD_8 RECORD_9 RED_MUSHROOM RED_ROSE RED_SANDSTONE RED_SANDSTONE_STAIRS REDSTONE REDSTONE_BLOCK REDSTONE_COMPARATOR REDSTONE_COMPARATOR_OFF REDSTONE_COMPARATOR_ON REDSTONE_LAMP_OFF REDSTONE_LAMP_ON REDSTONE_ORE REDSTONE_TORCH_OFF REDSTONE_TORCH_ON REDSTONE_WIRE ROTTEN_FLESH SADDLE SAND SANDSTONE SANDSTONE_STAIRS SAPLING SEA_LANTERN SEEDS SHEARS SIGN SIGN_POST SKULL SKULL_ITEM SLIME_BALL SLIME_BLOCK SMOOTH_BRICK SMOOTH_STAIRS SNOW SNOW_BALL SNOW_BLOCK SOIL SOUL_SAND SPECKLED_MELON SPIDER_EYE SPONGE SPRUCE_DOOR SPRUCE_DOOR_ITEM SPRUCE_FENCE SPRUCE_FENCE_GATE SPRUCE_WOOD_STAIRS STAINED_CLAY STAINED_GLASS STAINED_GLASS_PANE STANDING_BANNER STATIONARY_LAVA STATIONARY_WATER STEP STICK STONE STONE_AXE STONE_BUTTON STONE_HOE STONE_PICKAXE STONE_PLATE STONE_SLAB2 STONE_SPADE STONE_SWORD STORAGE_MINECART STRING SUGAR SUGAR_CANE SUGAR_CANE_BLOCK SULPHUR THIN_GLASS TNT TORCH TRAP_DOOR TRAPPED_CHEST TRIPWIRE TRIPWIRE_HOOK VINE WALL_BANNER WALL_SIGN WATCH WATER WATER_BUCKET WATER_LILY WEB WHEAT WOOD WOOD_AXE WOOD_BUTTON WOOD_DOOR WOOD_DOUBLE_STEP WOOD_HOE WOOD_PICKAXE WOOD_PLATE WOOD_SPADE WOOD_STAIRS WOOD_STEP WOOD_SWORD WOODEN_DOOR WOOL WORKBENCH WRITTEN_BOOK YELLOW_FLOWER