Cameron Faulkner/PolygonCameron Faulkner (he/him) is Polygon’s commerce editor. He began writing about tech and gaming in 2013, and migrated from The Verge in 2023.You can make any home theater instantly better with a new TV and a booming sound system. I mean, of course you can — heaps of money are great at solving problems like these. But here’s a savvy recommendation that’ll cost you less than $100: Give Govee’s smart TV lights a try, which add a reactive splash of ambient light behind your TV, matching the action that’s happening onscreen. Some of its models are discounted for October Prime Day, so you can get a set at a cheaper-than-usual price ahead of the colder months when it’s most fun to snuggle in front of the TV.Related:Best lighting kits for gamingBoth models I’ll be including here operating in a similar way: stick the adhesive-backed light strips around the edges of your TV, then position the included camera at the top of your screen to interpret what colors the light strips should match.Govee Envisual T2 TV backlights$80$14043% off$80The Envisual T2 is Govee’s midrange option. Its light strips are particularly dense compared to the Backlight 3 Lite with 60 LEDs per meter instead of 30, allowing for a more consistent beam of colors bleeding out from behind your TV. The camera included uses dual lenses to better track colors and their movement. This listed version includes 11.8 feet of light strips best suited for TVs between 55 and 65 inches, though there are variant models that support up to a 100-inch set.Read More$80 at AmazonGovee TV Backlight 3 Lite$64$9029% off$64The Govee Backlight 3 Lite is a less costly option that can be equipped on a 55-to-65-inch TV, but you can also pick up editions that support as low as 40 inches and as high as an 80-inch TV. As the name suggests, this is an entry-level model in that it includes a camera with just one fish-eye lens. However, some YouTube reviews note that the Lite 3’s calibration and contrast make up for what it’s lacking in the LEDs department. It’s easy to get lost in the specs, but at the end of the day, I’d recommend picking the model that best suits your budget.Read More$64 at AmazonLooking for more deals? Check out all of Polygon’s favorite October Prime Day 2024 deals right here, and subscribe to our newsletter below to get great deals delivered to your inbox every week.