Mobs
The Nether
Animals
Redstone
Mods
200

Awww man

Creeper

200

Material used to get here

Obsidian

200

Baaaa

Sheep

200

Block Pusher

Piston

200

Choose your origin

Origins

400

*rides spider*

Skeleton

400

Daily Double

This boat has legs?

400

Jungle meow

Ocelot 
400
The mob that can drop it

Witch

400

Recipe Viewer

JEI, NEI etc

600

Hmmmmm

Villager

600

Blaze Rods

Fortress

600

Oink

Pig

600

Time detector

Daylight Sensor

600

I can see through the floor!

X-ray

800

Villager Defender

Iron Golem

800

Fastion means fortress and what?

Bastion

800

Daily Double

Donkey and Horse
800

A machine with the same name as footwear

Flip Flop

800

Pokemon

Pixelmon

1000

Upcoming Tank

Warden

1000

Number of nether advancements

23

1000

Upcoming animal

Axolotl

1000

A standard redstone clock requires these delayers

Repeater

1000

Transmutation of items

Project e, equivalent exchange etc