Trains are my favourite place to get work done. I'm not sure what exactly it is about it but I can get 3 solid hours of focused work done, usually the work I've been avoiding for the previous fortnight.
I knew a guy who bought a flat-rate take-every-train-for-free ticket (ca 4000$ in Germany) instead of renting an office. Not my idea of the perfect working place, but it worked for him.
Oh, you know, lunch in Cologne, dinner in Munich, then back home. Or maybe a leasurely afternoon stroll in the Black Forest or on the shore of the North Sea.
