DangerousEnderPearls is a fun plugin that causes an explosion when an Ender Pearl is thrown!
The amount of damage is configurable, so if you want a huge explosion you can set it to 20.0 or more, for a small explosion 1.0 or 2.0 should be fine!
A video can be found here: https://vid.me/FWPK. (Sorry for the music, I forgot to turn my microphone off...)
The source code can be found here: https://github.com/IamGalaxias/DangerousEnderPearls.