"This? It's a feather-coin. I made it." Mogget explains that the coin is a toy he created, not meant for any practical purpose. It serves as a playful or whimsical object rather than a functional item.
"What is it for?" Sam asks, showing curiosity. Mogget responds that it doesn't have a specific use, describing it as a toy that can be used to annoy others. He also warns that if Sam doesn't put it away, he might eat it. This highlights Mogget's mischievous nature and the playful tone of their interaction.