Easy then, you can pick up a decent one at a local Lowes, Home Depot, Harbor Freight, etc. I would suggest a gas-powered model around 5 kW. You could run another cord to the kitchen for that refrigerator/freezer, then switch it to the microwave for a few minutes if you want to heat up food or water for yourself.

Generator power is "dirty" and digital thermostats may not do well on it, so they will need to be plugged into a surge protector.

Make sure the exhaust is vented away from the house, you don't need to deal with CO poisoning.