Little Things is a datapack that may additionally be packaged as a mod. If you are using the datapack, make sure to download the required resources too by clicking the download text instead of the download arrow.

Additionally, items will not show in the creative inventory. You will have to spawn them in using /loot give @s loot little_things:items/...

• Slagforged Blade: A weapon found in the nether fortress that can block like a shield (albeit less effectively) and become heated

• Toolbox: Stores 6 items (not item stacks!) and comes in all copper oxidation states