Megan on Twitter: "I like to use Size 4 yarn the most for my amigurumi! Also while the recommendation on most size 4 yarn is a 5.5-6.5mm hook I like to use
West Yorkshire Spinners Signature 4 Ply Yarn | Sock | Knitting and Crochet | Backstitch
Cotton Knitting Yarn Thai Cotton 250 g | STOKLASA Haberdashery and Fabrics