[1] The traditional patacó is a more or less square piece made with a couple of pieces of cardboard usually made from a Spanish playing cards or a box of matches, folded and fitted together the way they can be distinguished between front and back.
The construction procedure begins by splitting a card in half, leaving two equal parts.
To build them, the boys and girls waited for the adults and especially the grandparents to throw away the already used cards from their games in the cafe.
Usually when the grandparents' widely used or marked cards (for cheating) were no longer used, they gave them to the children who built their patacons.
Children also collected the empty boxes of matches that the old smoking people left in the coffee tables.