The night markets of Koh Samui are pretty impressive. Most are located around towns within the island and are chock full with all manner of goodies, including local souvenirs and a wide variety of food stalls. At these bazaars you can buy just about anything; clothes, accessories, handicrafts etc. Do check out the Chaweng Night Market located next to Chaweng Lake as well as the Chaweng Walking Street which takes place close to the Petch Buncha Samui Stadium. Head over to the area between The Wharf in Bophut and Fisherman's Village, on Fridays, where a large walking market takes place. There is another walking street market in Lamai, happening every Sunday.