Today only, 1Sale offers the Winegard FlatWave Thin HDTV Indoor Antenna w/ Built-In Amplifier for $22.99 with free shipping (they can’t guarantee Christmas delivery). That’s the lowest price we’ve seen (Amazon sells it for $70) on any Amplified HD Antenna in its class and a low price for HDTV antennas in general. Amplified antennas help bring in weak over the air signals from surrounding area TV stations without paying for Cable. This one is powered by USB, either from your TV or via the included Wall adapter.
Another option is the Mohu Leaf Amplified Antenna for $45 from Dealfisher (half off).