I was annoyed with how limited minecraft commands are for items, so i ended up making this addon that allows for pretty much everything for custom items

Tag yourself with `editor` to use these:

A brush is a world edit tool, blaze rods are ranged versions. Simply hold the item you want to fill with and crouch.

A book can be used to create blueprints(more on that later)

And using an item on a lectern opens up the item creator

using tags you can make custom items, after the _ will be the name
"held_" is any item your holding
"has_" is any named items in your hotbar
"head_" "chest_" "legs_" are for armor slots

using the "blockcast" "blockcast_name_" "blockcast_lore_" "blockcast_player" tags you can use raycasting for every item

Bad example but im tired.

With custom items you need custom recipes, to keep track of them players can use blueprints to view them

and check all blueprints by crouch-attacking a crafting table

To actually make a custom recipe simply place a command block down running "function custom_recipe" and place to dispensers named "Custom Crafter" above it, the first will be the recipe and the 2nd is result

Players can use custom crafters by crouching ontop of a crafting table to transform it, it will revert once they step away

Creator tools