Always ask for a bag whenever you make a purchase, even if it’s just a pack of gum. When possible, ask them to double bag. If asked, say you live in a third floor apartment or last time it leaked on your Jaguar’s custom interior.
Use as much disposable tableware, napkins, and papertowels as possible. Always buy the cheapest kind, but use 2-3 plates to make sure it doesn’t soak through. Added bonus: No washing dishes.
When the cost difference is minimal, buy products individually packaged or in smaller packages rather than in bulk. Don’t bother to scrape the last little bit out if it seems like too much effort.
Pick up smoking. Enjoy a nice cigarette next time you’re on a scenic autumn hike at your local park. Fail to dispose of your cigarette properly.
When at work, so it costs you no extra money, plug in as many extra fans, lights, space-heaters, and other appliances (like a small fridge or a microwave) as you can get away with. Use them liberally.
Another work one. Leave the window open for “fresh air” particularly during the warmest months of summer and coldest months of winter; adjust the thermostat for your office accordingly.
Don’t recycle, ever. When possible, steal your neighbor’s recycling bin and mix it with your trash as well.
Litter.
Research before you buy. Choose companies that are less environmentally friendly. Choose products made in less environmentally friendly countries. Ensure maximum packaging and shipping costs for all of your products.
Take political action. Vote for the least environmentally friendly candidates, even if you disagree with them on all other issues. Regularly write them letters about issues with major environmental impact. Attend environmental rallies and protest, obstruct, or otherwise cause mischief.
Buy a new car. Burning the most fuel is not necessarily your goal; find the ones that burn it the least cleanly. Modify it to improve performance, particularly if it makes it produce more emissions.
Don’t carpool. If you must, always choose the vehicle with worse gas mileage. Cite comfort as a reason.
This should get you well on the way. Hope it works out well for you.
On Preview: Hmm… Attempted to post this some time ago, but locked up and didn’t seem to go through. I did preview again to make sure, but still apologize if it ends up being a double.