Thank you for that!
As Michael says, burlap is great. It is probably my favorite. I think it translates to "hessian" in Australia and the UK. It is the kind of coarse, unbleached sackcloth that bulk potatoes are shipped in. Very cheap and burns for a long time.
If you can't find that, simple corrugated cardboard (rolled up into cylinders with about a 5mm gap all around inside the smoker chamber) is great fuel. I used to paint it with creosote years ago, but you probably shouldn't and you definitely don't need to. To light it, put some newspaper in the bottom of the smoker first. If you want to cool the smoke a little, just put a handful of green grass on top. Very simple.