It is called the swedish fire log. pour and soak for a few days or weeks. then when you need it start it on fire and you have a fire log that last for hours. we did this in the snow when we had parties or people over to keep warm.
Making PVC Look Like Wood I came up with this simple trick to give PVC pipe a realistic wood texture when I built a few plastic didgeridoos a couple of years ago. It would also work for theater, home decor or backyard tiki-bars!