An Idea for Mermaids

Now, don't get me wrong, I quite like the Mermaids as is but wouldn't it be cool if they had underwater furniture they could use!

Like, imagine if you could put a bed, couch or fridge in the ocean or in a pool and they could live there.
Obviously not anywhere but maybe you could have a couple underwater lots with a beach?

Having underwater themed items would be cool too, like a couch that looks like a conch shell? Idk, lol.