Michael, I hope you won't be offended if I say that you are more important than your "diabetic waste footprint." With so many people wasting other crap by the mountain-load (disposable razors, single-use cups, those ridiculously over-engineered "clamshell" packages, a zillon bottles and cans for unhealthy sodas and fruit-sugar drinks, layers of wrappers for all kinds of packaged, processed Frankenfoods, etc.) medical waste should be the MOST acceptable form of waste.
I have seen articles (with horrible photos) about people getting bad infections from dirty hands/lancets. I myself got a small infected wound in my leg not too long ago from injecting insulin through my pants-leg. I don't see why it's worth the risk to not wash and to reuse Lancets until they're like a bloody nail. Truly I don't.
I always bring my own tea and water cups to work, I'm happy to recycle most everything at home and at the office, but I refuse to feel guilty about the medical supplies I need to live a long, healthy life.
I also refuse to let employers or anyone else push me around when I need to test or treat my diabetes. I'll look people right in the eye and say, "I have to treat my diabetes. Now. I'll be with y'all in a few minutes." If they want to fire me for being three minutes late for a last-minute meeting because I had to inject some insulin, fine. OK. But I'm not going to go blind or lose a foot because some self-important, insufferable, arrogant jerk thinks they should be able to command me to not take care of my health. Slavery was abolished a LONG time ago; I'm a human being and my health comes first.