Or, you could install a transfer switch or transfer panel to power more of the house. The hardware isn't expensive (
this simple manual transfer switch allows you to safely energize all your home's circuits from your generator: cost is $100). With this system there's no danger you'll electrocute your neighbors or the power crews by energizing the main lines with your generator. All you'd need in addition is the receptacle for the 30 amp cord from the generator.
PROS: Flexibility- you can run your wood stove blower or gas heater blower, provide power to your fridge or freezer, turn on lights in a room just like normal, etc.
CONS: Flexibility-allows users to turn on too many things at once and overwhelm the generator. Also, this is a heavy-duty wiring project that most folks (or insurance companies/code authorities) would prefer that a licensed electrician perform.
For more bucks you can install a more sophisticated panel that has separate breakers/circuits powered by the generator. rather than powering the whole house.