Thinking of babushka and how she would fit into my project's requirements , I was disturbed by an idea with oranges and puzzels...fitting pieces of an orange which have a shape of a puzzle......maybe I could use the shapes creating a "nesting system" ---> a set of similar objects of graduated sizes, made so that each smaller one fits into the next in size....------> Ive decided to experiment a little and see what Id come up with.......