Really smart writing about 3D printing from one of the sharpest guys on the ‘net, Anil Dash. I agree with all but one of these suggestions: the one about bundling consumables into the cost of the device. A far better solution (and more likely one, long term) is self-recycling of raw materials. A house in the near future will have in it a machine that will mechanically disassemble your waste into useful blocks that can be then re-used for the creation of new things. 

3D Printing, Teleporters and Wishes