What?
We have a national holiday centered around "Plant a tree, save the world"
@OP, good topic - I think I'll bring this up at the next management meeting I get drug into.
I'm currently redoing the layout of our shipping/receiving and assembly/finishing departments to reduce redundant tooling, redundant consumable locations, and reducing motions and storage requirements. One of the side benefits I brought up was the ability to harvest the 'waste' from the assembly dept and using it for packing material instead of the assy dept packing trash cans full of decently useful stuff. When it goes into a garbage bin you can't typically recover it because it'll be very quickly soaked with oil, soda, tobacco spit, etc, so reclaiming isn't doable. But there isn't room for assy people to have separate bins for everything where they are now.
The one thing most places probably already do, but some still overlook is paper recycling. If you're not a "digital only" shop, you probably generate a shit load of paper. There are companies that'll bring in bins they'll periodically empty, that you can put around the office and shop. If you have 'sensitive' materials, some have a process to keep the documents secure right up to the point they're shredded. A couple of our bins have padlocks for ITAR restricted stuff and the disposal is allegedly acceptable to our auditors. We pretty much just throw all sensitive customer data in those bins and leave the general recycling for the everyday stuff.
We pretty much use Sunnen oil for all uncoated steel parts that get stored/shipped. I wonder if looking at the 'types' of oils would yield a "sustainable/renewable" source that suits the task.