Many exersize stores carry a chin up bar that can be placed between the jams of an open door. They are usually able to handle up to about 180 pounds of weight. Won't work for suspension, but works very well for binding the wrists above the head while your victim..ah...I mean your lover is...standing.
Large ceramic planters can be filled with dirt and are quite stable on the floor. Can be used to bind the arms with rope around the base of the planter.
Exersize benches with a bench that can be inclined work very well for a variety of positions. Ones with leg extention exersize lifts are even better.
A sawhorse can be found at most general hardware staores and padded with a thin exersize mat or the kind of mat used for camping, or even a thick sleeping bag. Some eye bolts can be sunk in the corner of each leg. Very good for binding the arms and legs and having your lover all bent over for....well...you decide for what ...
Just a few ideas of things I have used in the past.