At home I have the well tried by the fire and it works environmentally friendly and simple. Never again this stinking Spiritiusbröcken that around crumbs everywhere, s that you're afraid that wirgendwo what ignites when flying at matchstick PREPARE times sparks.
You also do not smell. I put 2-3 balls a few centimeters apart, on some pine cones or the like and it campfire similar 3-4 logs. Burns almost always, even if the fire in the beginning attracts not good for weather reasons.