Although hedgehogs will apparently move their own materials into a new home, the bears decided to give them a helping hand by providing some straw they had in the shed (for keeping their strawberries off the ground in the summer) and some dried leaves (which they had collected the previous Autumn).
The little bears couldn't resist having straw and leaf fights, throwing the straw and leaves around. Although Charlie initially smiled at these antics, he did eventually stop them playing and had them tidy up and then put down some nice straw and leaf bedding in the living compartment of the house.