3d metal printers. Just a matter of time before we all have one in the house to print what we need. Will be pretty cool to buy the rights for a part for whatever is broken and print it immediately. http://news.cnet.com/8301-17938_105-57377089-1/3d-printer-build-week-day-one/ It bugs me that every article about these things has some mention about the 'dangers' of being able to print a gun. It's not like criminals can't get guns now... And if they printed one the NSA would know about it anyways.