The boutique that most embodies the city’s hip new zeitgeist is LowFat Studio (17 Vilensky Per.; 7-812/579-2639; lowfatwear.com), an open-door workshop and showroom for the eco-friendly fashion line developed by business partners Merya and Vera Dmitrieva. The innovative duo, who design playful items such as unisex loungewear, stock a refrigerator with seasonal snacks for shoppers (gooseberries in spring; ice cream bars on hot summer days). Plus, much of the shop’s salvaged furniture—including the dressing room’s whitewashed screen made from old wooden doors—is also for sale. Another stop for souvenirs beyond the ubiquitous matryoshka dolls is Lyyk Design Market (74 Nab. Kanala Griboyedova; 7-812/939-6051; lyyk.ru), a white-on-white space in a hidden courtyard that features Russian fashion designers’ avant-garde looks, including quilted leather jackets by Leonid Alexeev. Across town, Generator Nastroenia (7 Karavannaya Ul.; 7-812/314-5351; generator-nastroenia.ru)—the name translates to “mood generator”—lifts spirits with leather journals embossed with cheeky Russian-language jokes or Soviet-propaganda-themed covers, a playful reminder of the city’s roots.