Editor 12.0 is a beta file of the Minecraft plugin Knokko's Custom Items, made for Minecraft 1.16, 1.17, 1.14, 1.18.2, 1.13, 1.19, 1.12, 1.15. It was published on April 22, 2023 and is 3.6 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Knokko's Custom Items plugin page.
How to install: Put the .jar into the plugins folder of your Paper, Spigot or Bukkit server and restart the server.
