Extra Achievements
Get an Achievement by crafting a 
Cake
out of 3 Wheat, 2 Sugar, an Egg, and 3 Milk Buckets
Get these Achievemnts if you haven't already.
- If for some reason you haven't picked up a flower yet, mine a flower to get the Biomes O' Plenty achievement Flower Child.
- Craft a
Fishing Rod
and go fishing. Cook some Fish to get an achievement. (You only get the achievement if you take it out of a Furnace.
If you have a Hopper, place down a lever to disable the Hopper.) - Toss a Diamond to another player and get the Diamonds To You achievement.
Craft a 
Bookshelf to get an Achievement.
Improve your Enchantment Table by surrounding your Enchantment Table with 14 Bookshelves. 6 go behind it, and 4 on each side.