Hair Donut
From Amazon
Extra Small Hair Bun Maker for Kids, 6 PCS Chignon Hair Donut Sock Bun Form for Girls, Mini Hair Doughnut Shaper for Short and Thin Hair (Small Size 2.4 Inch, Dark Brown)
OnBuy
Extra Small Hair Bun Maker for Kids, 6 PCS Chignon Hair Donut Sock Bun Form for Girls