It's hard to argue the relevance and application of 3D printing in todays society but here are three ways in which the technology will become relevant to everyone in the future
INSPIRE
Autodesk's 123D Sculpt, Creature and Catch and others create an entry point for all, new people interested in the technology and children who could concievable design and print their own toys.
These objects can appear gimicky but represent an amazing accomplishment in technology and introduce a whole new market to 3D printing including young people who could be inspired to be our future designers.
DESIGN
3D Printing allows rapid prototyping and micro manufacture, inspiring designers to design, create and share their ideas.
PRODUCE
Using 3D printers to produce items which can be used practically. By moving the manufacturing to the home people could begin to really see why having a personal 3D printer could be beneficial.
Nokia took a step towards this when they released the designs for a case for the Lumia. Inviting people to print their own cases. A truely useful day to day application for a 3D printer.