If you did play like most of the kids the famous LEGO set of toy to make your aircraft or house or even your car design, Here is chance to redo it again Digital Style.
Digital Lego Designer is a Desktop application for both Windows and MAC which lets you design lego toys with help of lego bricks of shapes and size which are available in standard game which you used to buy. In fact this is so easy to use that you can spend lot of time designing the car you had missed when you where kid.
Apart from this they have handy tools to clone, hinge, paint etc to make your experience a greater one. You can also start from some basic model and when you are ready with a unique design, just upload it to Lego may be you can get your design approved. Find more about Lego here.