LEFAM BRINGS YOU A NEW OUTSTANDING COMMAND BLOCK CREATION
BACKPACKS In Vanilla Minecraft!
1. type /give (press tab) comm(tab)
2. Copy and paste the command on the next page into a command block placed with a clear view of the sky. (also get the command at Lukpop.wix.com/inecraft)
3. Run the command with redstone (button, redstone block, pressure plate, etc...)
And the command will take it from there! (do not break blocks spawned into the game by the command)