My pet Aurianne is a mermaid. She has ocean related items (ignore the gold fish. I don't know how it got in there). https://subeta.net/petinfo.php?petid=1811877

I was wondering... what kind of trinkets of man are found at the bottom of the ocean?

, I totally thought of Ariel's cave in The Little Mermaid - lol.

I would say anything from maybe a ship that went down - nets, lanterns, forks, plates, etc...

Also, you could add trash-like items, since there is pollution and stuff - cans, bottles, etc...

my pet waterlogged has some shipwreck-related items that might suit aurianne. also:

The only thing with buoys... they float. You can't sink them lol.

I admire your TC item skills

hopefully this helped a bit - sorry if some of these are repeats of what you already have ♥

I didn't have any of those! If I had more SP, I could get the bedroom key.

oh yeah, I didn't even realize how expensive that was haha or might be a good alternative :)

Just a couple here, I'll add more if I find any! and apologies for any repeated suggestions

some more, maybe:

Great items! I highly doubt books and maps will hold up under water lol

Thank you for the ping, I am very flattered!!

Everybody already suggested a bunch of great things and Aurianne has a lot of items that I thought of in her treasure chest, but here are some things I thought of:

There is also a bunch of 'Deep Sea' themed items I found at subetalodge - please search there to see all of them!

Apologies if you already own some of these!