Another creature comfort item that is turning out to be a big hit is a 12″ foam wedge pillow. See:
https://www.amazon.com/gp/product/B00NGKWKS6/ref=oh_aui_detailpage_o05_s00?ie=UTF8&th=1

Without it you are awkwardly flat on the cabin floor. It folds so one can stash it out of the way pretty easily.