I wonder if a fundraiser supporting an iNat-identified need is an option? Say, hold a raffle or give badges for donations? An online silent auction could, conceivably, work.
The funds raised could go to any number of supportive causes; perhaps, providing pre-paid smart phones for older school kids in underserved areas (with iNat/Seek installed, of course), maybe vouchers for internet access, funding for youth science enrichment in schools or summer camps, or other science enrichment outreach, science tutors, etc.
Or, coordinating iNat users to provide Sponsorships for school children in targeted schools that reach iNat achievements challenges?
I realize these may not be feasible with iNat’s current structure, but at least it’s something to consider.