and lots of paper!
first you have to start with making wire structures of what you need to make and cover it with wire mesh.
after that is done.. cover them with newspaper using fevicol with the help of a paintbrush.
now, you need to make similar wire structures for the head and the tail of the turtle.
And one for the its lower part.
cover all of it with layers of paper mache and assemble them :)
The turtle I made has a moving head (can come out and go in) like the actual turtle itself!
The form can be painted and decorated also if needed.
Your simple and 'best out of waste turtle' is now ready :)