So, apparently with Choclodocus, you don't actually need to use all 3 coloured bones (which is the way it seems to indicate in the guide, the forums, etc) ... my daughter, out of sheer not knowing, just bought the red bone many times over and kept tinkering it, getting all the parts required and creating the egg (I gave her the amber).
I am just noting this because the info people are using seems to imply that all 3 coloured bones are needed.
Guess I don't need any disclaimer here any longer.