@mngrif My dream, assuming i waste infinite resources, would be to have a tank some 4 - 5 feet tall and just as wide. Ideally all transparent but thats asking for a lot. I would then have some sort of fish in the water, hydroponic plants with root systems going into the tank with the fish, and an extremely agressive ant colony as a small island in the middle, with interconnecting transparent displays fo rthem as well (under water but water tight.

Assuming I get a species of ant that cant traverse water very easily the water should act as a natural barrier for the ants. If they are aggressive and i have semi-aquatic creatures as well i might get the ants to occasionally eat them. Ideally creating a somewhat self sustaining eco system.

Right now its little more than a pipe dream. But that would be my ideal mega-project.