Baseball Sunglass Hat
I'm much more likely to be wearing a baseball cap outside when it's sunny than I am to be wearing sunglasses. Sunglasses always seem too inconvenient, especially when I also have to put on a pair of regular glasses that I only use for driving. They make clip-on shades for glasses but it would be much more convenient if a sunglass visor was built right into the brim of my baseball cap where it could be pulled down as needed (like when I'm driving right towards the sun at sunrise or sunset). That way I could pull it down (back to front) and get about a 3-inch tall, hat-length wide sunglass. A thin section near the rim of the brim would be covered in canvas so I could adjust the hat without getting my fingerprints all over the sunglass part of it.