We like to sit in chairs that can rock and recline. Power chairs that raise and lower themselves are becoming more common. Dean Kamen, inventor of the Segway, has also designed a wheelchair that can climb stairs and raise and lower itself. New exoskeleton designs make it easier for people to move large and heavy loads.
The ultimate chair should have the ability to move itself into position to lower an occupant into a sitting position or recline more. It should adapt itself to a comfort based fit. It should be able to move around under its own power. It might be an exoskeleton that can adapt from moving functions to sitting functions. It could have a variety of amenity functions built in such as: a drink holder, a utility tray, some storage compartments, and the ability to support a variety of appliances. All of these functions should be modular and adaptable to different purposes. An exoskeleton that has the ability to attach firmly to a support pedestal would provide the stability of a chair firmly attached to the floor with the mobility of a wheel based chair.
Other forms of furniture provide mostly working surfaces and storage space. These forms can use modular designs to provide flexibility and adaptability and can also integrate mobility and robotic functions. Fixed wall units that provide storage can supply smaller detachable mobile cabinets with items currently needed at hand. When no longer being used, the cabinets can re-integrate with the wall.
The goal should be for the room to be able to be reconfigured from bare space to an arrangement of seating devices, working surfaces, and storage space and then back to bare space in a matter of minutes.