cave spawner ?
No you cannot make one of those the only way to get one as of 1.0.0 is cheats and/or hacks
Chat with our AI personalities
I didn't make Minecraft.
how to make a fire works in minecraft 1.5.2
you can't make a pencil in minecraft, but there mite be a mod for it.
You have to have a mod (modification) to make a cannon. It is not in vanilla minecraft.
There is no rope in vanilla Minecraft.