Miraflores Inca Market
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They are listed as "market", "crafts market" or "indian market", but everyone I've met calls them "Inca market". This is where you can buy souvenirs (some of them mass produced) as well as useful clothes and other hand-made items. Personally, I credit the Miraflores Inca market with making the Amazon trip bearable. Without the "Inca pants" I bought there for S/.20 ($8), which were bright (great against mosquitoes), light and with a fabric that let air in, the hikes would have been unbearable.