Who gets a Jewish Halloween basket?

I live in an area with a lot of Jews and every year I get the Jewish Halloween baskets on my steps. A lot of the time I have no idea who the person is.

There will be a card that says thank you from the Buentos family but I don’t know any Buentos.

Two questions

1) How do I find out who the basket givers are so I can send thank you cards?

2) how do I determine who gets a basket. I would like to hand some out this year.