Feel like real BBQ? Don't have a smoker? Don't feel like spending more than 10 bucks or so? Like Alton Brown? Here's how to make a very serviceable smoker out of a cardboard box and some other things you might have laying around the house.
This rig worked remarkably well. The biggest problem was getting the temperature high enough. You want to cook BBQ at around 225 degrees F. If you can't get your smoker up that high, you can still use it to smoke, then finish whatever you're cooking in the oven.
Step 1: Get a cardboard box
You need a box that's big. But not too big or you'll never be able to heat it up. My box is about 4 feet high, and two feed square. This is actually on the larger end of the size you want. Cut a hole in the bottom as shown, so that you can change the wood chips out during the cooking. Its a lot easier if you leave the bottom attached to use as a hinge.
Step 2: Add dowels to support the racks
You'll need at least one rack in the box to hold the food you're cooking. Ideally, you should also add another rack so that you can have a drip pan. This will keep your food from dipping onto the pan with the wood chips, which could start a fire. This would be very bad, since cardboard is pretty flamable. I used wooden dowels stuck through the box.
Step 3: Add the racks
I used a cooling rack to hold the food, and a disposable baking rack for the drip pan.
Step 4: Add Your Heat Source
For a heat source I used a hotpot. I put an old cast iron skillet I had lying around on it and fill it with wood chips. I tried both dry and soaked chips, and both worked equally well. The soaked chips just took awhile longer to start smoking and brought the temperature of the smoker down.
Step 5: Monitor the Temperature
A probe style thermometer is very useful to monitor the temperature inside the smoker
Step 6: Start Smoking
I smoked a pork shoulder. Google and you can find hundreds of recips for rubs and marinades.