Several different ways to cover the skylight to decrease room heat and light. More
Skylight shade hanging from one rod with the second rod in and the shirring even between the 2 rods
U-Channel from the hardware to block the light either side of a roller blind
Skylight Shades, CoolSun Skylight Solar Shades, Screens and Covers
Shades Shutters Blinds - Super Saver Skylight Shades
Outdoor sun shade ideas. The website is for a company that makes them but anyone who is crafty and can run a sewing machine little can easily follow their drawing to create your own!
tension rod curtains for skylights
EZ Snap Exterior Skylight Shades block 90% of Sun's Heat
Need to look into: "Automated Black-Out Blind for Skylight to provide optimal heat protection during the summer
skylights fabric shades--actually, I'm doing this on my pergola over-hang on my patio..so simple. I'm using drop cloths; great neutral color & inexpensive!