/<name of custom item> to get a custom item permission: op
More info:
you can easily make more custom items with the code just copy paste & edit to your liking, very easy.
DEPENDENCIES: SKRIPT
READ IF YOU DONT KNOW WHAT SKRIPT IS
Skript is a plugin that allows you to make Mini plugins called "Skripts" you need skript to use this, download skript via the skriptlang team's github most skript versions are compadible, after you installed skript reboot, go into the skripts folder, then scripts and then just drag and drop the .sk