TT wrote:

To expound on that, you can make your own firelogs
(like the storebought ones) with sawdust and leftover candle wax saved from burned down candles.

I sometimes buy fire logs at Coastal Farm Supply. Their logs contain
no binders. They are extruded sawdust, compressed so tightly that the
sawdust holds together all by itself. You can use them in a wood
stove, which you can't do with the wax kind.