As I don't know the exact 'the mats full story', it's hard to say the main idea. But if it's about mats as objects, the main idea might be related to their function, like providing comfort or being a part of the household decor.
Since I'm not familiar with this particular story, the main idea could potentially be about the significance of mats in a community. Mats could symbolize something important in the story, such as unity. Maybe different families contribute to making a big mat together, and through that process, they strengthen their relationships.
Not having read 'the mats full story', I can only speculate. It could be that the mats are a central element in a story about change. For example, a family has old, tattered mats and they get new ones. This change in mats could mirror changes in the family's life, like new members coming in or old ways being left behind. The mats could be a metaphor for the family's journey through different phases of life.