The whole room is painted white including the ceiling and I needed to reduce the amount of reflected light onto the ceiling - painting it flat black wasn't an option. In order to keep cost down I bought 4 sheets of flat black Bristol board from our local dollar store - 2 for 1.00 and thumb tacked them to the ceiling.
Easy to remove without any visual evidence if we ever sell and the effect on the reflected light really worked. I actually added a second row later on to further reduce the reflection - an extra $2.00
Marantz SR-5300, Oppo BDP-93, Epson 8350,
Mains-KEF Calinda,Center-VP180,Surrounds-Dahlquist Q4s,QS8