A 60 year old friend of mine from the "west" is coming "india" and going to stay for a while.we will meet after a month and I have been thinking about buying some presents for his son and daughter.The problem is I have no idea what should I buy for a present.
By the way,I'm an indian,though I have no interest in the culture or whatever,but my white friends are pretty crazy about india,so it's a problem.
Any suggestions about presents [ofcourse,limited budget lol] for the daughter in her 20's,the son [20's] and their father would be very helpful

First I would talk to him, unless you already know. Often gifts for "his" children are not customary for people in the west and may be just a waste of money.

But yes, things about Inda and its culture,