A cob bench isn&#x27;t the only thing a rocket stove can warm up for you. This is a rocket stove powered staircase, sculpted out of cob by Danish architect, mason and thatcher Flemming Abrahamsson [www.fornyetenergi.dk]. It&#x27;s included in the book &#x27;Rocket Mass Heaters&#x27; available here www.rocketstoves.com by Ianto [www.cobcottage.com] and Leslie [www.well.com/~les/].