A Christmas from the Street?

I never believed in Santa Claus. None of us kids did. Mom and Dad refused to let us. they couldn’t afford expensive presents, and they didn’t want us to think we weren’t as good as other kids who, on Christmas morning, found all sorts of fancy toys under the tree that were supposedly left by Santa Claus. so they told us all about how other kids were deceived by their parents, how the toys the grown-ups claimed were made by little elves wearing bell caps in their workshop at the North Pole actually had labels on them saying MADE IN JAPAN.
Try not to look down on those other children,” Mom said. “It’s not their fault that they’ve been brainwashed into believing in such silly myths.”
We celebrated Christmas, but usually about a week after December 25, when you could find perfectly good ribbons and wrapping paper that people had thrown away and Christmas trees abandoned on the roadside that still had most of their needles and even some silver stars hanging on them. Moms and Dad would give us a bag of marbles or a doll or a kite that had been marked down in an after-Christmas sale.
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My question is: “Did this family picked up the ribbons and wrapping paper and a tree to reuse them for their Christmas?”

I (Japanese) didn’t read that way because 1. this family seemed too proud to pick them up from the street and 2. in my culture picking up things discarded from the street is not socially very acceptable.

The point is "you could find." Just finding doesn't mean picking up,is it? Or this finding includes picking up? The author used "you" to hide their feeling of shame?

So, do all natives think that this family picked up a Christmas tree? (A grammatical factor.) Or do some of you think otherwise? (A cultural factor.) Look forward to your replies.

Thanks in advance.