We spend some time conquering a zombie spawner and building a very simple automatic harvester around it. The killing mechanism works by drowning the zombies. This makes it 100% efficient because it also kills the zombies as quickly as they spawn.

This spawn killer is quick and easy to build. Best of all, it is small and requires very few materials that are all easy to acquire.

Later in the episode I also play around with the concept of converting my phone booth mob trap into a large wall.