Lego Portal! It makes perfect sense.
Valve's mind-bending first-person puzzle series is all about megalomaniacal sentient robots constructing a gauntlet of crazy test chambers to run subjects through.
Why not create a Portal themed Lego set so people can make like GLaDOS - or Wheatley - and build their own test chambers. Sure, the Portal 2 level creator might be a better alternative for those inclined, but there's nothing like playing with adorable super-deformed Lego versions of video games we love.
Team Jigsaw has been working on a LEGO Portal project, if you'd like to see Portal LEGO sets become a reality, support it now at the Cuusoo product page.