The plugin currently only supports 1.12.2 and lower. The way Spigot handles custom enchantments has changed in 1.13. I do not intend to update this plugin anytime soon, if even at all, so use at your own risk.

UndroppableItem

Documentation | Support

General Information

With this plugin you can give items a special enchanment, which makes the item somewhat different: items with the enchantment are prevented from being dropped (pressing 'Q', or moving out of inventory), moved to another chest (configurable per inventory type), can not be placed in Item Frames and they will be kept upon death. There is also a bypass mode to bypass all these features.

This plugin was requested by 2PRO4DAUNIVERSE. Credits of the idea of this plugin goes to him.
Original Plugin Requests post.

Features

Enchant the items with one simple command: /undroppable enchant
Remove the enchantment with /undroppable remove
Items with the Undroppable enchantment can not be dropped, stored into other inventories (configurable per inventory type, e.g. Chest, Ender Chest, Furnace, Dispenser, Dropper etc.), can not be placed in Item Frames and will be kept upon death.
Bypass these features by toggling bypass mode with /undroppable toggle
Instantly ready to go: no special setup required

Commands

Command usage	Description	Permission node	Default to
/undroppable enchant	Enchant item currently in main hand	undroppable.enchant	Operators
/undroppable remove	Remove enchantment from item currently in main hand	undroppable.remove	Operators
/undroppable toggle	Toggle bypass mode	undroppable.toggle	Operators

Planned features

None

If you have any suggestions for features that could be added, please create a ticket on the Issues page. Thank you!

Donations

Many hours have gone into making this plugin, to make it a unique addition to your server, and to ensure that all functions are working as intended. If you would like to donate to me, feel free to do so, it is much appreciated!

Important notes

By using this plugin you agree that:

this plugin may be used for both non-commercial and/or commercial use. Seling access to any of the functions of the plugin is allowed, but only on server-scale.
using the plugin's source code for educational or personal use is allowed. Copying and/or using it for commercial use, or claiming it as your own is extremely prohibited.
you will use this plugin in conformity with the license that comes with it (viewable on the top right of this page at 'About This Project').