Reduce, reuse, recycle. Alcohol stoves are reliable, cheap to fuel, and easy to carry. Thus, backpackers, hikers and campers are fond of them. Alcohol burners are commonly used in junior high and high school science experiments. If it costs Zen Backpacking Stovessomething like two pop cans and 30 minutes to build an alcohol burner, why do you have to replumb a school building to accommodate a real science class? Surplus school alcohol burners sell for circa $9 a pop, if the school is afraid of insurance liability. Geeze -- has the entire budget been sucked away to defend against lawsuits, or something?