Go Green?

In my last post I wrote about the importance of Made in the USA to my customers. I got some great advice. And I got this suggestion:  you could try adopting some greener practices. So how do I do this? Without going into much detail about our processes, I'm not sure how to go green. We don't have much waste, so aside from recycling the mailing label backs there's not much I can see to do. I don't print out anything I won't use. We turn off the power when we leave. All the material scraps are saved in a basket. 

For a while there I was using 10% recycled paper for my product packaging and biodegradable cellophane but we did away the 3 pack bags and the recycled paper was much more expensive than regular paper. The last thing I want to do is waste money. 

Any suggestions? Can I go green and not break the bank? Why is recycled paper more expensive? Is there a list of standards and practices for going green? Can we get certified? Am I missing something?