Maybe it's my fervent garage-saling background, but I love junk shops: those cluttered, disorganized places guaranteed to make you sneeze from dust and hopefully give you a kitschy knick-knack to go home with for a couple of bucks. New York is full of them, but I never thought I'd find a junk store in Paris. Imagine my delight when I stumbled upon Interloque Ressourcerie.
The location on rue de Trétaigne is a true junk shop - all manner of used books, dishware, and clothes abound in the space. You'll also find pulpy paperback French novels and hundreds of postcards from all over Europe (six for 1€).
The rue des Cloÿs space around the corner is a bit more organized and boasts a slightly more expensive collection (though still dirt-cheap considering the treasures hidden on its shelves). Here you'll find vintage leather purses and briefcases from 20-40€, records, unique wall hangings, and even - be still my heart - French typewriters. I just want to write that again - French typewriters. French typewriters.
If you want to go beyond the typical Paris souvenir route, if you have a sense of humor and love the thrill of the hunt, if you find old dusty relics to be charming, then Interloque is a good place to start.
7 and 7 ter rue de Trétaigne,
14 and 14 bis rue des Cloÿs 75018 Paris
Métro: M12 to Jules Joffrin