Wood
Now I've got a too big smoker I need to be able to fill it with wood. This thing is so big I'm buying another much smaller one so I can grill steaks. The firebox on it is huge, the meat box is cavernous. I could easily cook half a dozen sides of ribs or three briskets and it does a great job at that. But it needs to be fed. I went through all the charcoal I had first time I used it and that wasn't enough. After some research I found this place in Austin: http://harleyswoodyard.com/
The pictures are accurate. The place is huge and has deals on wood that are cheap compared to anything at Home Depot or our local grocery chain. I got a pretty large wheelbarrow of oak and a huge bag of smaller pieces for $30. Maybe a quarter of what it would have cost me elsewhere.
The guy that sold me the wood along with advice on using it for brisket had a couple of teeth missing and would typically be mistaken for homeless. But he was on the job and really helpful.
Now I've got a stack of wood and plans for ribs in a week or so.