Here are two "green" things we've been doing over here. These are the "white cloths" (as Ken has named them) that we use as a paper towel alternative. I inherited this habit when I married him and I have to admit I was still a big paper towel user in the early years of the marriage. Now I've come around almost completely and use a paper towel only occasionally. These cloths are super soft and absorbant and perfect for every use around the kitchen and elsewhere too. They are "birdseye weave" diapers (the non-folded kind). Obviously these have never been used on baby bottoms.
Another thing I am trying is these metal tins for lunches. These are great in my lunch--I tumble orange sections in them or just whatever--anything that doesn't need to be microwaved. I've tried sending Faith's lunch in them too, to mixed reviews. She liked the tin at first, but we've had issues with the textures melding or the pb&j "leaking" which she is super picky about. For now I'm still very wasteful with the teen lunches, packing a traditional lunch with plastic bags in a paper lunch bag. Hopefully, the boys can use these tins though when they start preschool next year . . .