There is a difference between "we can't think of functional uses now" and "nobody will ever be able to". Toys R Us are to a first approximation a store full of

There is a difference between "we can't think of functional uses now" and "nobody will ever be able to". Toys R Us are to a first approximation a store full of functionally useless figurines and toys ($14bn in sales per year). Increasingly kids will grow up limited by their imaginations, and not what is carried there. My fridge is full of containers, all of which could be differently shaped and sized to better suit me. It is awkward sending people things in the mail that aren't boxy due to standardised mailing containers - again being able to print the perfect one would be great. My garden could do with some innovative shapes such as a structure I can put half above ground, half below and put various plants in various orifices, have water flow and be stored in useful ways that reduce maintenance etc. Child safety seats could match the children exactly as they grow. Edible printing could throw open all sorts of creativity. Furniture could be made to fit spaces exactly. Printed items don't have to be rigid, which opens up possibilities in clothing - non-functional trinkets at first, but later on perfectly form fitting clothing for the occasion. The real question is what will never be technically possible, with a mild mixture of what will never be economically feasible.