Let’s keep things simple two rules.
- No giving sentience, This is a no brainer issue.
- Let’s keep it to beings under the Animilia kingdom. “mutated virus/bacteria” is a common trope.
To start:
Let’s modify ants to have lungs.
Most insects are constrained by the amount of oxygen they can acquire through their exoskeleton.
Imagine how big they can get if they didn’t have that constraint?
I thought I read about this for real a while back? In a bid to make plastic decay faster, make it out of cellulose with embedded bacteria that can break it down. It still happens too slowly for most plastic packaging