Tought id give this contest ago, i'm not usually the one who goes for a big contest like this at all. But i want to contribute my ideas to this topic aswell so here we go.
I had three ideas to begin with.
1- An amphibian creature protecting its eggs from maintenance crew in a subway or sewer.
2- Some sort of flower growing in a deep dark cave surrounded by staligmites, with a single shaft of light supporting its growth.
3- Fabrejeh eggs cracking open in a museum revealing baby creatures.
Let me know if you like any of these, for now i'm gonna experiment with my strongest idea (1)