The Custom Game Items and Inventories system is for designing and using items with unique attributes, functions and values in your game. Now, you can use Scene Graph and Verse to access the Custom Game Items and Inventories system in Fortnite. Using Scene Graph's entities and components, you can customize Fortnite's player inventory, and create custom items unique to your island.
Also, check out these tutorials that demonstrate some of the awesome potential of custom items and inventories!