I want one of these SO BAD! EcoSphere - inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. Put it somewhere with some light and they will self-sustain for years, no feeding or cleaning necessary.
REALLY want this // the self sustaining ecosphere is permanently sealed within this hand-blown glass sphere. Its careful balance of air, water, plant and animal life was developed as the result of years of NASA research.