This toy set from ThinkGeek allows you to build your own action figure. As a kid growing up, I had some pretty amazing toys, but not many of them inspired personal creativity as much as this one does. It's important that children are able to use their imagination and create things for themselves. This toy is a great way to encourage this.
The kit comes with a variety of body parts which allows a number of different combinations. The toy itself comes as a blank canvas in white which allows for the owner to run wild with the included paints and paint brush.
This kit would be especially awesome for kids who have created their own superhero and want to see it actualized in a physical form with this build-your-own action figure set.