Topeak Hexus. And my smallest adj. crescent wrench when I'm on my Dahon Curve. I use it all the time at home for adjustments rather than take out other tools.
http://www.topeak.com/products/Tools...6yellowW_O_Bag
Not that it's the 100% best out there or anything. It was just what was at this one shop that was going out of business.
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The bicycle, the bicycle surely, should always be the vehicle of novelists and poets. Christopher Morley