Practical or not, there is no denying the nerd-gasm inducing wow factor of Microsoft's Surface. Of course, Surface is expensive -- like, unless you're a millionaire you're probably not buying one for personal use expensive. There are some DIY solutions out there, but designer and developer Seth Sandler has come up with the cheapest and easiest yet. Built from about $400 worth of material (some of which you probably have lying about your home / apartment / dungeon), the MTbiggie brings big-screen multitouch to the masses. Like the hacker's previous homebrew multitouch device, the MTmini, there's not
