I would like to be able to spawn Ender Crystals, like you find in the End but be able to put them anywhere I feel like using their entity spawner item "383:200". (Item 383 with damage 200.) How possible would it be to make a server plugin to spawn the ender crystal that heals dragons using that egg to spawn the item? Then consume the egg in the process.
The plugin appears to be out off date. It's for 1.1-R6. Doesn't stop me from saying that it uses commands, rather than the entity item that people rarely know about. What if I want to sell the egg to players so they can spawn their own ender crystal?
There's probably other spawn eggs that spawn other stuff too. Have fun typping /give name 383 1 #, 255 times. xD