A leafshell bowl with organic shaping on the outside and lined ridges inside. It can be scaled up and prints without supports. I would print with your wall generator set to Arachne.

I have attached the stl as well as 3mfs for Creality Cloud and Bambu Studio.

If you want to print and sell these, or any of my other designs, click 'become a member' on my profile page and use the code 3DPB25 to get 25% off.