I guess if I came to your house and saw several jars with bottons, I would jump to the conclusion that you love and collect buttons. That's probably happened with the relatives, and if you don't set them straight they will continue to think that they are making you very happy by bringing you more buttons. Actually that's not such a bad thing, is it? Costs them little, shows that they care about you, and the jars of buttons must make a pretty display.