groceries
Most of the things that one needs can be found in one of the stalls in the Central Market. Stiff bargaining is needed to get it for the right price.
Small supermarkets can be found all over town. They normally stock luxury items at a luxury price.
The largest supermarket in town is Dimitri on the little roundabout of Chaussee Prince Louis Rwagazore and Av du Congo. Do not expect too much, but Dimitri has shopping carts!
The Greek owned 'Boucherie Nouvelle' on Av du Congo is worth is worth a visit. Always busy, but then it offers a wide variety of meat, cheese and charcuterie. Opposite the butcher you find vendors with exclusive and rare vegetables and in the rainy season wild mushrooms of all kinds. Be prepared for a real hassle and 'persusive' sales techniques.
souvenirs
The best place to buy souvenirs is the small curio market on Av de Stade.
Another small curio market is found on Chaussee Prince Louis Rwagazore, opposite Library St. Paul.