There is this really cool mob trap where you can at least get 1000+ items per hour. It was made during the alpha days and still it works perfectly like it was. I also think it took a lot of work because it was a building above the sky limit and down to bedrock, and it seems very hard to make, I’ll give it a try though…
More information
http://www.minecraftforum.net/topic/51943-mob-tower-gravitylava-trap-11510-itemshr-updated-111/
Download link
