What is your Dietician blocking (and why)?

I've got mine maxed at 5, so I'm blocking:

• Skeletons - Because I don't want to have a low-level Grave lying around
• Eye Monsters - Similar to Skeletons, but also Low-level Supply Cupboards don't produce anything to kill of the knights that spawn
• Spiders - They're a pain
• Mummies - Slightly better than Eye Monsters, but I have to waste a mummy to get rid of the Villager.
• Unicorns - I have better uses for them.

I'm currently around level 225, so my needs are somewhat reflective of that.