niddle ScoE

And the shape can be shape of niddle, or even the shape of egg.

Niddle noddle went his head,

NO!, that's not me. "Mischief " is my niddle name, Yet they love me all the same.

Christopher Melchert, The Transition from Ascetism to Mysticism at the Niddle of the Ninth Century

Decorative Arts Ukrainian decorative art collection includes many textile items, wood carving, ceramics, musical instruments, bead and niddle works, decorative Easter eggs, national costumes; Ceramics, Porcelain or Pottery

On a spread whose focus is birds, for example, the Mother Goose rhyme "Robin Redbreast" introduces the subject: "Little Robin Redbreast / Sat upon a rail, / Niddle, naddle went his head, / Wiggle, waggle went his tail."