The interpretations of what qualifies as a coffee table are considerably broad and all-encompassing. Any surface that is close to seating and will allow for space to easily put something down on will work. Also coffee tables can help set the tone of a room by holding a few appealing decorative pieces of different textures and heights.
A seasonal ever changing display inside the coffee table keeps the top clutter free.
" Successful design always solves problems---with function, aesthetics, and a bit of serendipity."---Elizabeth Gaynor and Kari Haavisto