They need an:
LED reading light that goes around their neck!
This gift was SUCH a hit when I bought it for my mom, and then she bought me one too and I love it! It has a velvety-smooth patch so that it feels nice on your neck, and it has three different brightness settings as well as a toggle between warm yellow light and cool bluish-white light. Both arms are bendable and easily adjustable; you can also choose to have the light coming out just on the right arm, just on the left arm, or on both. And the price is definitely right!