Do you remember this chair by John Reeves? It’s remarkable: a stool becomes a chair and vice versa, simply by lifting or lowering the seat back. Several chairs can be stacked as stools, leaving a very small footprint for a whole lot of seating. Perhaps this same idea has been employed before, but I’d reckon it would be hard to find a sample with the same degree of thoughtful design and simplicity. (Update: now on sale for $416.50 from $595)
Available from ABC Home, 416.50.