Sink or bath for garden pond (IP4)

Hello. I'm on the hunt for an old butler/Belfast sink or even perhaps an old freestanding bath to create a pond in my garden, as I'd like to be more biodiverse 🍃 🐦 🐸

It doesn't need to be in great condition as it'll be sunk into the ground, just as long as it's solid (I will fill in the plugholes etc. to make it watertight).

I live in IP4 Ipswich so nearby would be ideal, although could travel a short distance too.

Thank you