SimsZone.de has held a contest on their forums, where the users were asked to make their design for the box of The Sims 2. Because the two best ones got exactly the same amount of votes, there were two winners. There's no real prize except the privilege of calling yourself a winner, and finding the design in the screenshot index of The Sims 2 at Sims Zone. You can find the shots here and here. Congratulations to the winners.