White Electric is an eclectic worker owned coffee shop that offers bagel sandwiches, fresh donuts, and every kind of coffee drink imaginable, including the classic Rhode Island "coffee-milk" (made from locally roasted beans) in an off-beat interior.
Hungry Ghost is an artist-owned studio and shop that sells a range of merch (all printed in-house), as well as repurposed vintage apparel, patches, pins, local zines, VHS tapes, and other deadstock eccentricities. Great for souvenirs and niche Rhode Island joke products (like their notorious "Rhode Island Slut" sweatshirt, inspired by a scene in the original Dumb & Dumber movie).
One of Providence's weirdest and best kept secrets. A holdover from the years from Providence was considered "the Jewelry capitol" of the US, Wolf E. Myrow is a vintage jewelry warehouse selling closeout jewelry supplies and wholesale jewelry findings. They've been around for fifty years and most of their stock is even older—you could wander around for hours and still only see a tiny portion of their collection of beads, tiny figurines, Swarovski crystals, and chandelier findings.