AI-designed teardrops with minimum effort on my part in prompting. As such, there are some...um...artistic and physics-based liberties the computer employed in the creation of these things. So take that under consideration.
Still, most would be buildable with sufficient money or time.
The point, I guess, is that there's no limit to what we can make. Not taking sides on whether that's good or bad - what I do know is that it's good to dream.
Enjoy!