Apple pipes are a cinch. Here's my method:

1) Get together an ordinary apple, an ordinary pen, an ordinary screen from a faucet, an ordinary lighter and some extraordinary weed.
2) Pull out the apple stem.
3) Stick the pen into the top of the apple all the way to the center of the core, making a hole.
4) Stick the pen into the apple again, this time halfway down, making a new hole perpendicular to and conjoined with your previous hole. There should now be an L-shaped tunnel going from the top of to the center, then out the side.
5) Blow or suck all the apple guts out of the apple.
6) Place the faucet screen (after drying) on top of the apple, where the stem was and where the opening to one of your holes is.
7) Place the weed on top of the screen.
8) Spark up and suck from the other hole.