It can be tempting to treat that extra paycheck like free money, but it is still part of your regular salary. A smart thermostat may lower heating and cooling costsHeating and air conditioning make up a large portion of many household utility bills. A portable power station can help during an outageA portable power station is essentially a large rechargeable battery with outlets and charging ports. Unlike a gasoline generator, a portable power station does not produce exhaust fumes and can be used indoors. Paying down debt or building savings may still be the smartest use of an extra paycheck.