Back in March I wrote about the impact on us of the new house next door, particularly the light lost from Michael's workroom. We have somewhat solved the problem by having a skylight installed. It's called a sun dome and is a silver-lined tube that extends from the roof through the attic space to the ceiling and directs natural light into the room. There's a clear plastic dome on the roof and a diffuser at the ceiling end. It has made quite a difference.
I took this photo on a sunny day. It's not as bright, of course, when the sky is cloudy.