One of the blogs I follow is by Geninne Zlatkis, I love her paintings, drawings and photographs. I am always inspired by her blog. I also was fascinated by one of her photographs of crochet covered stones. I searched the web and found a pattern for these stone covers by Margaret Oomen and this is what I kept my hands busy with while relaxing in front of the TV last night. You can get the pattern here http://www.purlbee.com/little-urchin-crochet-covered/
The crochet hook size they give in the pattern is size 9. It is 1.4mm, I am using a 1.25mm hook and it works just fine.