Pipes - Preservation of the pomaceous fruit of the malus domestica?

[Jimmehboi]

(An apple)
SWIM wants to make his own paraphernalia which will be a kind of pipe, but he also wants to be very creative.
Everyone is familiar with the "apple bong" and SWIM had the great idea of making his own hand-carved, reusable apple bong by somehow preserving an apple. In SWIM's head he has the image of a very shiny apple covered in enamel but he knows that the apple will only rot inside the enamel shell.
What could SWIM do to the apple in order to fully preserve it once he's carved it?
Thank you very much =]
(Incredibly unusual thread, I know. Many apologies accompanied by much love)