I know, these images were a little bit iffy. I've done better renders of indoor scenes (check out the first picture for this project for a really good one), but those took 24+ hours of time to achieve really good render quality. I chose to not go to such long lengths for these because a lot of light was just sunlight anyways, and the indoor light was more of an accent in most cases. I would've disabled emitters altogether, but I felt that would've looked very wierd given the high usage of lava and glowstone.

It drops everything from creepers, skeletons, zombies, spiders, and witches. In my experiences, it gives everything from common gunpowder and arrows to bottles, glowstone, and redstone, so there's a huge variety of things it can get you. The only mob it really has problems with are witches - it kills with fire/lava, but the witches are smart(er than they should be) and use fire resistance potions.

Anyways, about the waterflow, I tried a variety of ways of carrying items before settling on this method. Hoppers were my first thought, but they couldn't handle the load and they presented the problem of what happens when all available inventories filled up. I settled for a traditional water transport system in the end, but I did put ice on the bottom to speed up the item flow.

Thanks! In case you're interested, the software I used to make this is called Chunky - it can be found here.