Is there anyone active on iNat, in your area, that you could consider recruiting?
Perhaps someone who engaged in the City Challenge, then drifted away and went quiet on iNat? Your expertise combined with their enthusiasm?
When lockdown is over and Kirstenbosch is open again, they have a busy programme for school kids. I see it costs R20, that is a nominal amount.
https://www.sanbi.org/community-initiatives/kirstenbosch-nbg-biodiversity-education-programme/
We also have a charity / research group which teaches township kids to swim. And about sealife and pollution. Swimming lessons and access to pools are taken for granted for the privileged. With a very real risk of drowning for non-swimming kids at the beach.