Idea for contests: Creatures and ecology that trees support.
There is a landscape contest but there aren't any contests that specifically incorporates land care or caring for the environment ~ Which could be as simple as someone bringing back rubbish from a local creek or sharing their backyard garden ~ Vegies and flowers, to make it as broad as possible.
There aren't any contests, that I've seen specifically for insects either: Which would include butterflies, dragonflies, beetles, spiders etc. 🦋