Kohree HDTV Bias Light (White), $10 with code 9QK4O6IU | RGB, $10 with code 74J7BQ6Z

HDTV bias lights are so cheap now, that you really don’t have any reason not to try one out.

These Kohree LED bias light strips plug directly into your TV’s USB port for power, and stick to the back of the set via built-in adhesive. Once you turn your TV on, the light strip will cast a soft glow on the wall behind it, which can reduce eyestrain when watching in the dark, and improve your TV’s perceived black levels.

Both the white and color models are $10 right now, so I’d probably opt for the RGB, unless it sell out.