> (2) there's a nice product called LightDims that are removable. Little stickers that are about 95% opaque.
You can also use colored electrical tape as it is opaque (buy quality tape like the 3M brand). I've found that the best colors to use are white or yellow. Other colors work too but let less light through like red, magenta, and blue. Though those darker colors are beneficial for very bright LEDs.
I taped over all the annoying LED's on my router, switch, and low power server which live in my bedroom on my desk. It went from discotheque to barely noticeable.
2. Duct tape/sharpie