OK, so we've seen some really cool replica Portal guns in the past, even one that actually works, but this one totally blows them all away. This one genuinely makes a companion cube levitate, right there, floating in mid-air.
I reckon it'd be slightly cooler with the steam punk Gravity gun, but the Portal gun is white and shiny, and you can actually buy one easily. Anyway, it's all done with the magic of magnets -- a hacked floating globe to be exact, complete with a custom companion cube. The combination, well, it's just awesome. Jump over to Hack-a-Day to see how it was made so you can build your own. [Hack-a-Day via Engadget]