You will have your own favourites, but I always liked the Traffic Light Tree in London's Docklands, a bewildering display of red, amber and green which kept me waiting, transfixed and tense, for really quite some time when I first encountered it.

BBC: Sheep on Shoreham roundabout

Then I had the chance to meet her mom and her daughter, Amber, a little while back, and we took a picture.

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"I don't know if that's possible, " Amber Born said.

WSJ: Notable words from the National Spelling Bee

There was a big research phase, talking to people I know or was introduced to, like Gary Vaynerchuk, Deanna Zandt, Eric Ries, Amber Rae at the Domino Project, and Tim Ferris.

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