I was wandering around on Pinterest and Youtube for some days ago and found some cute tutorials and pictures of donuts, made for jewelry. I thought that the size is a perfect fit for dolls, mostly Barbie, Monster High and similar. I had some Fimo clay at home, in brown and some pastel colors that would work for the donut and the frosting. Even if the brown is rather dark, it can work as a chocolate donut with frosting.