This is my auto loading TNT cannon. Just press the button to fire. There is already a village next to it in the map.
Please diamond if you like it.

I give all credit for this device to Generikb. Specific video: http://www.youtube.com/watch?v=PLECQzzuI2A

Additional Notes

Sorry about this, but since I don't know how to make it so that you can download the world save in one download, you have to download them all separately(but they are in the same folder on mediafire).