Why were the children certain that trinkets were for them?

The children were certain that the trinkets were for them because they had seen adults offering similar items as rewards or tokens of affection in the past. Additionally, the colorful and playful nature of the trinkets sparked their imagination and made them feel special. The excitement and anticipation of receiving something shiny and new reinforced their belief that these treasures were meant for them. This sense of ownership and entitlement was further fueled by their innocent desire to possess something beautiful.