ItemCollections

Item Collections Plugin
This plugin is a slight modification of the plugin requested here:
https://bukkit.org/threads/itemcollections.487284/

In essence, this is a small plugin that allows privileged users to make it so players can redeem a collection of items in their inventory for a different collection of items.

These item collections are defined by the privileged users.

This should work on any server 1.13+, but as stated above, it was only tested on 1.16.

Command Usage:
/ic register <collection-name> : Register a collection of items that a player can redeem for a different collection of items
/ic : View the commands that players have access to (although "/ic register" will be hidden).
/ic collection <collection-name> : Redeem a collection of items for a different collection of items
/ic list : View available collection trades

Permissions:
/ic register : itemcollections.register
/ic collection : itemcollections.collection
/ic list : itemcollections.list

No need to edit configuration files. Everything can be done in game.

Icon credit to Material Design by Google.