This my home office:
And while it's a great place to work, it faces south. This means that in winter, the sun is low on the horizon and there are no trees to block the glare. Since my window doesn't have blinds (and since blinds would block out all the sun entirely and I would be working in a dark cavern all day), I use a picture of Frankenstein Mr Bunches made. Periodically I have to stop what I'm doing, stand up, and move the picture a bit to the right in order to keep blocking the sun.