A Digital Antenna

First off, you’ll need a way to watch the game. Yes, you can watch the Super Bowl through a cable TV subscription or any of the streaming services, like Sling TV, that include cable. You can also sign up for an NFL+ subscription. Or you can just go old-school to get it completely free with a digital antenna.
The upfront cost here will be between $20 – $90, but once you’ve got it, you’re done. Simply tune into Fox on the day of the big game, from now until digital antennas go the way of analog ones.
There’s too many models and needs out there to really recommend a good one-size-fits-all solution, but Mohu’s Leaf line is a good place to start looking, with thin options across the the budget range.