Nice idea. Start with the basics that actually save money. Upgrade to LED bulbs – they’re cheap, last longer, and cut lighting costs right away. Tighten up insulation, especially in the attic; a few inches can keep your HVAC from running full tilt. Install a programmable thermostat and set it a few degrees lower in winter and a bit higher in summer – you’ll barely notice the difference. Add window shades or thermal curtains; they block heat loss without extra gadgets. Finally, replace old appliances with Energy Star models – the upfront cost is offset by the lower running bills. No fancy tech, just straightforward changes that add up.