The message
from "Mary Fisher" contains these words:

If you do cut it down do it carefully, the outside envelope is vey fragile.
When it's down cut it in half, carefully, with a bread knife and show the
children the marvellous architecture of the construction.

They really are seriously impressive inside. I took a sectioned one to
my son's primary school once - the kids were dead impressed.

--
Skipweasel
Pay no attention to that man behind the curtain.