[Nursie]

Yes there can be a social thing, I had a friend who collected Starbucks city mugs, so people would bring them to her from all over the world.

On the “associated” thing - not so much about collections but there was an interesting article on the guardian website a few months ago, about a woman who came to realise that ‘I like Prosecco’ was not a substitute for a personality, but she had run with it for so long that that was all she ever got as a gift, and she discovered her friends knew very little else about her. A one-dimensional character trap.