Force Resourcepacks
Run actions when a player declines your server resource pack like kicking or not allowing them in certain servers or regions! Works on Spigot, Bungee and Velocity.
ExtraFireworks
ExtraFireworks adds several new crafting recipes for unique firework effects including ones that can disable user-defined texts and map images as well as the ability to configure your own unique effects via its configuration system!
ShowItem
With the ShowItem Bukkit plugin you will be able to take full advantage of what Minecraft has to offer while working with items! It even takes it a step further and adds the ability to show an actual icon of the item in the chat as well as a live view of the inventory and enderchest!