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This mod was created primarily for content creators, as well as for map and server developers for Minecraft. It adds hidden blocks and items from the game to the Creative Mode inventory.

List of Blocks and Items
1: minecraft:barrier
2: minecraft:structure_block
3: minecraft:structure_void
4: minecraft:spawner
5: minecraft:command_block
6: minecraft:chain_command_block
7: minecraft:repeating_command_block
8: minecraft:command_block_minecart
9: minecraft:firework_rocket
10: minecraft:tipped_arrow
11: minecraft:splash_potion
12: minecraft:potion
13: minecraft:written_book
14: minecraft:enchanted_book
15: minecraft:lingering_potion
16: minecraft:knowledge_book
17: minecraft:spawn_egg

Video review of this mod: https://youtu.be/fBlq4IdWbs8

YouTube: