We've all heard that watching TV in the dark can be pretty tough on the eyes, but an ambient bias lighting setup can make the experience much more palatable. This basic USB-powered kit from Antec is only $18 today, and takes just a few seconds to install.

All you have to do is plug the LED strip into the USB port on the back of your TV (or any other USB charger, as you just need it for power), stick it to the back of your set with the built-in adhesive, and then enjoy the glow. It has a small switch to turn the light on or off, but a lot of TVs will cut power to their USB port automatically when turned off, which saves you from having to flick it off manually.

We've posted this deal several times in the past, and it's always proved to be incredibly popular. The problem is, every time we promote it, it sells out within hours. What I'm saying is, if you want this thing for under $20, and without a backorder, you should order it immediately. [Antec Bias Lighting Kit, $18]

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