A rocket stove burns so efficiently that it ensures almost complete combustion prior to the flames reaching the cooking surface, so there is virtually no smoke. And they're easy to make! Click through (Diy Step Fitness)
Busy Board - Love this idea! this is a spectacular idea but at the same time i wonder if it would make them want to play with the real stuff more? but my goodness i really really love this idea. pretty sure every toddler would love it.