SUPER cool items that will help you ALOT!!
Note: Minify the command to avoid issues :)
Jupiter (the "ghast" giant)
Double-Archer Ghost Spawner (Boss/Troll)
minecart cars
Rockets (Doesn't send you to the moon though)
go 1000mph with a walking stick
TnT
Get cool minecraft banners in ONE COMMAND NO MODS!
Herobrine's Flesh