I'd love to see this plugin in minehut!
A brief description:
ExecutableItems: A Free plugin (although it does have a premium version) that makes it easy to create, as the title suggests Executable Items! There is a custom UI that allows for near infinite possibilities (literally)!
Link to ExecutableItems: https://www.spigotmc.org/resources/custom-items-with-simple-gui-executableitems-1-12-1-16.77578
ExecutableItems Premium (if you so choose): https://www.spigotmc.org/resources/executableitems--create-custom-items--800-servers--1-12-1-16-5-.83070/