I was actually just looking at Tinkercad. Our school is a two-year college that is heavily populated with student athletes. I teach a majority of science classes and have been wanting to use the 3D printer in conjunction with some of our honors projects. I actually just got a Prusa i3 kit so I could learn how everything works and then help the students, now that it's up and running I'm trying to figure out what software to use apart from what the art classes are doing.

That robot blog is pretty cool, I actually used a Robotics Shield Kit from Parallax for my bio class last semester as an introduction to programming and robotics in relationship to evolution and how we could model evolutionary process through design progression with the robot. Most of the kids I work with have never seen a line of code or dabbled in CAD like programs.