Anna, there are various bakeries around Sintra, some featuring the famous “quedinha” pastries. A famous one of these bakeries is right in the center of town, can’t remember the name just now, but it must appear in every guide book. There are some shops in town too, of course it depends on what you are looking for. I found an upstairs tile workshop and gallery, operated by a woman and her two daughters. I got two tiles there that I display at home and love. Their tiles also are mostly quite thin and light, unlike many others.