Ever since a Blue Peter presenter first uttered the words "sticky back plastic" and "here's one I prepared earlier", egg boxes and toilet rolls have been the sine qua non of any self-respecting lunar space station or cardboard crocodile.
As any parent will tell you, without those two essential ingredients the expression of youthful creativity through the medium of household detritus is severely compromised. In the words of one mother, "They are absolutely essential. How can you make a stegosaurus without them?"
