[Teeppoodiug]

If you are still in your homecountry then I would suggest some kind of souvenir. Something that will remind them of your visit. Like a model of the statue of liberty if you are American or a tea towel of Buckingham Palace if you are English.

But, if you are already inside Thailand then I would suggest bringing something along that is practical or that could be used straight away. Maybe a bottle of drink, fruit or some other kinds of snacks. Thai people love eating snacks.