Here is the most valuable thing in the whole of Moomin Valley, Groke! Do you know what has grown out of this hat? Raspberry juice and fruit trees, and the most beautiful little self-propelling clouds: the only Hobgoblin's Hat in the world!

The Groke looked at the hat. Then she looked at Thingumy and Bob. Then she looked at the hat again. You could see that she was thinking with all her might. Then suddenly she snatched the hat and, without a word, slithered like ann icy grey shadow into the forest. It was the last time she was seen in the Valley of the Moomins, and the last they saw of the Hobgoblin's Hat, too. At once the colors became warmer again and the garden was filled with the sounds and scents of summer.