The last time you took a trip somewhere special, did you get a souvenir? If you didn’t, you are probably in the minority. For some reason, many of us want to take home a physical reminder of some place we visited. And shops everywhere are eager to help us do so. Why else would travel destinations pack stores with fetching picture post cards, neon key chains, t-shirts and other tchotchkes bearing the name and imagery of the place visited?  Was there ever a time we weren’t eager consumers?