Plastic Flexible Fish Tanks
If you don't like square fish tanks or round ones you have no other choice. If you make the tank flexible your square tank turns into a roundish but supported tank. This would distort viewing purposes a little but which tank full of water doesn't. The fish would be seen as a round object and be quit hilarious in different parts of the tank except for top viewing. I think we could make any shaped tank flexible and it would be loads of fun.
A plexy-glass clear plastic that is flexible is all that would be needed and as someone who used to fill plastic type boat water tanks they stand up to any pressure so no leaks, no breaks, and the coolest tank in town. Hmm.... I wonder what shape I want... maybe tubular like the little cyclone machines. Maybe even combine cylone action with the dizzy fish!
Reward: I would like to own a fish. Also a fish tank so that I would never lose him/her.