Every so often, one dies. It's no big deal, they're only snails after all, and they lay hundreds of eggs a year if they're reasonably-well looked after. The only problem is what to do with the corpse.
I have found that the easiest way to deal with the body is to bury it for a few weeks and let minibeasts do their work. After that, it's only a matter of washing the shell out with plenty of hot water and a peg on your nose.
But what do you do with a slowly-growing pile of large shells?
Inspiration came in the form of CanDo's Conch Shell Horn Instructable.
Step 1: What you will need
You will also need eye-protection and preferably a dust-mask.