https://www.spigotmc.org/resources/otherdrops-best-free-drop-manager.51793/
OtherDrops isa simple plugin that allows you to add anything from asimple glass drop to a complex overhaul of your servers' drops, with drops differing depending on tools, biomes, times, weathers and much more. It comes with customizable messages, actions, and even commands. It is lightweight (meaning it only acts on what you have configured), and respects most protection plugins' (such as WorldGuard and Regions) settings. Some examples are included to help get your creative juices flowing!