Yesterday, I stumbled upon Treedom for the first time (despite existing since 2010). An Italian platform/project addressing reforestation work in a sustainable and ethical way.
Treedom allows you to choose a type of tree and pick a few locations worldwide where to plant it in. Local farmers are then enrolled and paid via the platform to take care of planting the trees, which are geo-tagged and monitored via the platform.
They also have a wealth of information and side projects revolving around CO2 emission, sustainable development goals and the like.
A very interesting commoning project/platform.