I fill up whenever I see cheap gas, as long as I'm down at least 1/2 tank.
I wash ziplock bags and save 'em for use on the workbench--storing loaded rounds mostly.
If I only dry my hands on a paper towel, it gets recycled as a 'clean' towel on the cleaning bench.
I rejuvenate my corncob media with Mechanix Orange; works great.
I rinse my brushes immediately in alcohol to stop the Hoppes from degrading the bronze bristles so quickly. I reuse the alcohol.
I'm a dumpster diver extraodinaire.
Buy my "chore" clothes at Salvation Army--you know, when I gotta paint around the house, get under the car, etc., them's the clothes I tear up. Sometimes I buy my storage containers there, too. and for casting lead, Sal Army is a great source for pots, spoons, and hotplates.
I recycle my Hoppe's #9. I tip the firearm barrel into a glass jar when I'm cleaning the bore so all the drippings are captured. After the scum settles to the bottom, I strain it into another jar using an automotive paint strainer--they'll strain those lint particles you see floating in a sun ray. I can save about 75% for reuse. Hell, at $18 a quart Hoppe's is damn near as expensive as Crown Royal. Takes a lot of this practice to come up with a bottle of 18yr Macallens.
I buy my handguns and all my optics used.
I think I'm done.