An internal combustion engine, and integrated electrical generator, both enclosed in a single housing. The present invention has at least two wrench units with two sockets positioned side by side thereon. The grinder includes grinding elements arranged to produce a shearing action while the mixer includes an auger to produce a churning action when the ground matter requires periodic mixing during the decomposition process to produce compost. The underside of the crash box may have a hat profile which at its outer end changes to an inverted hat profile. As a result, the handset reduces the need for an end user to tilt and twirl their head to try and find the direction of the strongest signal strength. According to some approaches, this is performed with consideration of bi-exponential modeling.