The methanol woosh bottle is a popular demonstration. This variation shows how the energy from this reaction can be put to good use. Find out how to perform this demonstration at http://rsc.li/eic0313ec This modified procedure also reduces the risks associated with the original methanol reaction, in response to some recent accidents. This is part of the Education in Chemistry Exhibition Chemistry series: chemistry demonstrations to capture your students' imaginations: http://rsc.li/EiCExChem