My next tank is definitely going to be a fancy goldfish tank. They remind me of pugs. Plus, saving a few from a bowl life would feel pretty good!
I wonder if anybody makes a 30+ gallon glass bowl? That'd be a big bowl, but it would probably look really, really cool if it was scaped nicely, and you could actually keep things in it! Plus, I doubt a fancy goldfish would be all that likely to jump out of an open-topped bowl. I'm not sure fancy goldfish can even jump.