Two other products it's worth buying in Thailand is Eno (to relieve your stomach after over-eating) and sore-troat lozenges.
At flu season time I went to see my doctor and she prescribed me some lozenges. For my surprise the lozenges were imported from Thailand.
You can buy them at most of the shopping malls or outside in any local pharmacy.
What to buy: Eno and sore throat lozenges (good for sore throats, vincent's angina, tonsillitis, gingivitis, seasonal mouth and throat infections, treatment of germ carriers, etc.).
What to pay: Very, very cheap.
Bangkok is plenty of huge shopping malls and supermarkets. Most of the tourists who come to Bangkok wind up by buying local crafts, dried fruits, fake watches and t-shirts.
However, they don't realize that Thailand is home of some of the most exotic fruits you can find in this planet. Therefore, from these fruits Thailand also produces a wide range of high-quality shampoos, spa foam, bathing soaps, creams, conditioners, etc. Of course most of the tourists have not notice this but for those who come here once in a while they know very well what I am talking about.
What to buy: So, next time you come to Thailand (either Bangkok or other big city) pay a little more attention to the products I have just mentioned, it is without doubt worth-while buying (myself every time I come to Bangkok besides local food I also buy a reasonable bunch of shampoos and bath foam).
What to pay: These products are very cheap.
There are plenty of supermarkets in Bangkok that sell almost everything from alcohol to toiletries at cheap prices. We also bought loads of sports geat ie Adidas & Ellesse at various shopping centres such as World Trade Centre and MBK
What to buy: Just about anything