Name of the plugin you want : EZBucket
Spigot Link : https://www.spigotmc.org/resources/ezbucket-1-7-1-12-region-support-gui-horizontal-vertical-and-infused-gens-genbucket.50944/updates
Price : $4.00USD
How it would contribute towards the betterment of the community : Genbuckets for factions!!