Hoppers are known as a common problem for lag. Therefore, server owners tend to disable hoppers from being crafted and force players to buy them from the shop at a high price.
SimpleHopperBlocker disables hoppers from being crafted. But if admins wish to craft hoppers, server owners may give them permission to this node: "simplehopperblocker.craft.allow". Players without this node cannot craft hoppers.
There are no commands associated in this plugin, so it's a relatively light-weight plugin. Just download and import it into your plugins folder!
Permissions:
- simplehopperblocker.craft.allow - Allows players to craft hoppers.