What all can you take from the flight?

I have seen people taking sample liqour bottles, salt, sugar, pepper, the steamed towel. What's the maximum that somebody can take, before you can call him ghir gaya saala?

Does spoons, forks and knives come in the takeable items list?

Folding the newspaper given by the airlines into neat paper bags, wiping the spoons and forks clean and putting them into the bags. Does this constitute a gross act?