For the basement stairs: cabinets, stairs with flip up steps and very narrow stairs. Each step goes up one at a time for each foot. It is sort of spaced so you are putting one foot per step with a steeper step. Very space-saving.
It may be enough to convince some tiny house critics out there: determined to keep a regular-sized refrigerator, stove, washer-dryer, a patio and enough space to entertain, this couple& tiny home - built on an extra-wide trailer - feels positively large.