How An Apple Engineer Spends His Free Time

[Hoofbite]

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Pretty cool.

Even more impressive is that it was initially built so long ago.

[Sam I Am]

You would be damn surprised if you actually saw what many geeks of this world do in their spare time.

Staying on the Lego theme, a Lego Rubix Cube Solver
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A Rube Goldberg Machine that was created by the band and some engineers the video is for. (I recommend watching this one, it's very good)

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