I used Govee's TV Backlight T2 in the past, and it did a decent enough job creating ambient lighting. The brand has a new model in the range dubbed the TV Backlight 3 Pro, and the main highlight is that it gets HDR integration. That's interesting enough in its own right, so I installed the TV Backlight 3 Pro on my 75-inch TV, and used it for the better part of a month.
The TV Backlight 3 Pro is available on Amazon for $179, and that's for the standard model designed to be used with 55 to 65-inch TVs. If you've got a larger TV, you'll need to get the 75 to 85-inch version, which costs $209. The only difference between the two is that the 75 to 85-inch variant gets a 16.4ft LED lightstrip, with the regular model getting 11.8ft.
