Stacking makes furniture from old items (books, toys:you'll see) or improves particular technology (you'll see again). So, before I stack too much information on your shoulders (I seriously apologize for that), here are 22 stacking innovations from 3 cups in 1 to tableware totem poles.
Implications - With consumers flocking to urban cities for job opportunities, living spaces are drastically decreasing in size. Consumers now require furniture and goods that are functional, yet compact for small spaces. Companies can capitalize off of this occurrence and appeal to urban dwellers by manufacturing space-saving products.