You don't, it's an item in the game's code, but it has no functions. You need hacks or an inventory editor to get it, and even if you do, it's basically just a decoration.
It was originally made to soak up water, but is now only available in creative mode or used for decoration.
ether a mod or a serious minecrfat build
Nothing.
The moon is unreachable in vanilla minecraft, but various mods allow you to make portals there, the current height limit is about 255 blocks high.
It's only attainable via Creative Mode or inventory hacks.
In the current release, while you can access Sponge in creative mode, it is not coded to do anything, or rather the earlier code it used to have, has been removed.
I didn't make Minecraft.
There are no keys in minecraft!
You have to have a mod (modification) to make a cannon. It is not in vanilla minecraft.
you can't make a pencil in minecraft, but there mite be a mod for it.
how to make a fire works in minecraft 1.5.2
There is no rope in vanilla Minecraft.
There aren't wrenches in Minecraft.
There is no such thing as a suppressor in Minecraft.
How to make a apple in minecraft pe