Idiom of the day :- A money-spinner

Usage, examples and definition of the Idiom :-

Grandmother’s hobby was knitting woolen scarfs, socks, sweaters and thins like that. People admired her work so much that she turned her hobby into a money-spinner and began selling her goods. A money-spinner is anything that earns money. ‘Grandmother’s hobby became such a successful moneyspinner, I was able to retire,’ Grandfather smiled.