Turtle shells

So my brother came back from a several day hike with a turtle shell and all ai know to do with it is make it into a rattle. But he doesnt think he wants to do that, so… any ideas on what we can make it into?

a bowl?

I recently acquired a partially crushed dried turtle carcass myself… when I get around to it I plant to separate the bottom carapace and polish it, and cut pieces from whats left of the dome for whatever… afaik you can use it for lots of things you’d use horn for.