For individuals with more severe disabilities, there are the single-handed, head or mouth stick, and expanded models.
en.wikipedia.org Other examples of small groups in isolated living conditions are record long-distance flights, long-distance (single-handed) sails, oil platforms, prisons, bunkers, small islands and underground bases.
en.wikipedia.org A second shell covered him and his instruments with debris, but he continued his gallant work single-handed.
en.wikipedia.org He ran the publication single-handed for two years, writing and duplicating the newsletter, and responding to the increasing volume of correspondence.
en.wikipedia.org