Even if the hamsters hadn't brought this up, Kim Haru would have. After all, the more they upgraded their abilities, the larger their spatial compartments would grow, enabling them to carry more items.
Aside from that, the discussion also covered living conditions for the hamsters.
First, they couldn't be caged; they needed a free, open space to move around. Secondly, every hamster had unique preferences for their nesting spots. Additionally, they wanted materials like wood shavings or cotton balls for warmth during the winter.
While Kim Haru could provide wood shavings for the small hamster, the rest of the group would have to wait for now. Cotton balls, on the other hand, seemed easier to source, and the hamsters didn't require a large quantity.