I have a very simple idea which won't be too hard to make. A smoke machine is a block, selected with the command ''/smokemachine enable'', That creates smoke particles above it when powered by redstone. Example, You have an iron block, you select it with /smokemachine enable, place a lever on it, swich the lever, And there it is: Smoke. To remove the smokemachine-ability from a block, you use /smokemachine disable. Sorry for the bad english, I'm Dutch. Thanks already; Johano.
