1Block, inspired by Skyblock

Starting with only 1 block in the world - a chest containing a sapling, ice, a lava bucket and grass - your objective is to aquire as many different blocks and items as possible, using any means possible, including use of bugs/glitches. The only things you can't do are things that potentially give you access to every block and item, such as:

• Going into creative mode
  
• Branching out until you hit the mainland
  
• Editing crafting/smelting/brewing recipies
  
• Using a world editor to create/delete/move chunks
  
• Using an NBT editor to edit mob drops, villager trades etc.
  
• Using a Minecraft version before 1.2.1 (a normal world is generated instead of an empty one)
  
• Using mods
  

This map is all about thinking outside the box.
For example, your first challenge will be to get wood from your sapling. If you don't want to wait several hours for it to grow, what can you do (within the rules)?
Answer: Increase the tickspeed of the game

If you're creative enough, you can get pretty much every block and item in singleplayer!

https://drive.google.com/open?id=1ES9885-_Pr5Np8B-BfW197gfmXPEcdv8

Please note:
While this world works in any Minecraft version from 1.2.1, you won't be able to shift-place blocks next to chests before Minecraft v1.4.6. And switching between Minecraft versions may cause problems like items disappearing from chests and not being able to respawn on the "island".


Thanks to Noobcrew for inspiration