That's not to say that keeping a goldfish in a small bowl isn't cruel, however. I think it's one of the most common forms of cruelty against pets around. In the aquarium hobby, we refer to those little bowls as "goldfish torture chambers."
Display flowers or potpourri in a vase or decorative bowl from IKEA
Comets (the smaller goldfish) SHOULD NOT be kept in bowls. They need a minimum of 20ish cycled gallons (you can get away with ten if it's well filtered and has a lot of surface area and you do water changes often and on schedule). They need lots of room to swim and zip around. If you do not know what cycling a tank is, you need to do this in order to take easier and better care of your fish.
Why Fish Bowls Are Bad For Your Fish | PetHelpful
13 Fish Bowl and Aquarium Design for Fish Lover – Design Swan