Here's a very inexpensive way to recharge some AA batteries by using outdoor solar lights. You naturally can bring these in, and use them to light up some rooms though there is great variability in the amount of lumens produced.

Being able to charge some batteries might mean being able to have some way of listening to a radio, though of course a better way is to buy a dynamo powered radio/light set. They do make little dynamo flashlights to seeing your way in a dark house, but they're noisy and most likely your sleeping family members will hear them.

Pretty clever.

A dynamo/radio/light combination

They actually used to make these for 3rd world nations, and they were given away, but with the interest in "green" tech, it became more marketable in the USA.

There are lots of different kinds of dynamo flashlights. Here's one:
[link to www.google.com]