I agree AnadY, the most practical gadget here is the call for assistance. It serves an important need. The other three gadgets have value and they're all impressive as homemade products, but the call of assistance was created to improve someone's life. That said, the crock pot was also developed to improve someone's life. The bike proves out the ability to manage fluids, and the camera is nothing but amazing in the creation of its own parts.
Okay, now this is a difficult task. All these creations are freakish. That said, if I absolutely had to make a decision, this would be my least start from the least freakish to the absolute gadget freak in this group; A gadget's call for assistance, the analog camera from 3D parts, the programmable crock pot and Mr shock with his bike. But that's just me.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.