Recently the Bag Ladies decided to start giving USD$1 for every order of resealable cello bags placed with us to a great charity called "One Tree Planted". They are based in the United States but do great work all over the world, including right here in Australia helping us regenerate after the recent bushfires.
You can find out more at their website www.onetreeplanted.org. You may find you'd like to get directly involved too, either by donating personally, setting up a stewardship arrangement as we have or by getting involved at ground level, actually planting trees.