My wife and I and our two daughters (31 and 27) spent a morning strolling to and around the Darajani and Estella Markets in Stone Town. The girls were after two major items: bulk spices and fabrics (Kanga vegetal prints cloths and Kitenge patterns). I was along for the sights and thrill. This crazy and congested marked starts in the pre-dawn and shuts down in the mid afternoon--so an early start is advised (in part to beat the heat). It consists of a series of covered halls and twisting alleys, and it is totally packed with people and animals. Luckily, our youngest speaks passible Swahili--which made it much easier for us to a) find what we were looking for, and b) negotiate a great price. We were able to find and buy, for example, real vanilla beans/ pods for about 50 cents each, as well as large Kanga clots for around $10 each (we used Shillings and not US dollars here). It was a very loud and colorful morning--and loads of fun--but dress appropriately (no skimpy clothes).