This Play-Doh 3D clay printer offered by ThinkGeek has set a new standard for children's toys.
The clay printer connects to one's iPad and can print designs straight from there. What is most special about it is its ability to print the user's own design. This ability will likely attract adults as well considering the surprisingly low price. Users can also share their designs with each other so anyone can make a physical copy of your vision. The printer is able to mix three colors at once to create more fleshed-out designs.
It's great that the printer was able to maintain the childish and playful aesthetic, despite being a technical toy. It's officially not fair -- children's educational toys have become substantially better than my generation's ant farms and bouncy balls.