A leaky toilet may go unnoticed, as will the extra cash absorbed by your water bill. To check for leaks, add enough food coloring to your toilet tank to really brighten the water. After 30 minutes, look to see if any of the dye has leaked into the bowl.

Drive off as soon as you start your car’s engine. Modern engines don’t need much time to warm up, so idling creates unnecessary pollution and mechanical wear.

Donate your old furniture to a local furniture recycler. They’ll turn your unwanted pieces into something covetable, saving it from the landfill.