1. Switch to LED light bulbs: LED bulbs use up to 80% less energy than traditional incandescent bulbs, resulting in significant cost savings over time. (source)
2. Install a programmable thermostat: By automatically adjusting the temperature when you're away or asleep, a programmable thermostat can save you up to 10% on heating and cooling costs. (source)
3. Use a clothesline instead of a dryer: Hang-drying your clothes not only saves energy but also helps them last longer. Plus, the fresh scent of air-dried laundry is an added bonus. (source)
4. Reduce water waste: Fixing leaky faucets, installing low-flow showerheads, and using a dual-flush toilet can significantly reduce water consumption and lower your water bill. (source)
5. Buy second-hand: Opt for pre-owned items like furniture, clothing, and electronics. Not only will you save money, but you'll also reduce the demand for new products, which require resources to manufacture. (source)
6. Grow your own food: Planting a garden or even growing herbs on your windowsill can save you money on groceries while reducing the carbon footprint associated with food transportation. (source)
7. Use reusable shopping bags: Bring your own bags when you go shopping to reduce plastic waste and avoid the cost of disposable bags. (source)
8. Unplug electronics when not in use: Many devices continue to draw power even when turned off. By unplugging them or using power strips, you can save on standby power consumption. (source)
9. Bike or walk for short trips: Instead of driving, consider using a bicycle or walking for short distances. Not only will you save money on fuel, but you'll also reduce air pollution and improve your health. (source)
10. Reduce paper usage: Embrace digital alternatives like electronic receipts, online billing, and e-books to reduce paper waste and save money on printing and storage. (source)

By implementing these surprising yet effective green practices, you can both save money and contribute to a more sustainable future.