Two things I’ve been thinking about -
black construction trash bags, to put over the windows from the inside so no one can see your lights,
small, portable car starter type battery setups. I have a larger one, and a smaller one, the small one, when fully charged will run a 75 watt florescent (hooked up to a 225 W inverter) for over 12 hours.
Silent lights.
They can then be charged during the day when the generator is running.
Solar walkway lights....
Try these for daytime charging, silently. They can be bought for $149.00. (And, they don't use gasoline either.)
Silent lights.
They can then be charged during the day when the generator is running.
Look into the solar battery charging stuff they sell at Harbor Freight - you can recharge a car battery or equivalent with one or two of those, silently.
Another thought is the various home-built DC-AC generators that can be built from garden edgers, power washers or lawnmowers - pretty clever and made of extremely abundant components. I first saw the design on www.TheEpicenter.com, which is an informative site to have bookmarked.