Fire TV Stick with Alexa Voice Remote, $24.99 [Prime Day price on older generation model, $19.99]
With the Amazon Fire TV Stick, you can stream media to any TV with an HDMI input. Popular services like Netflix, Hulu, HBO Now, Showtime, Sling, and NBC are all available in addition to Amazon Prime Video. With Alexa capabilities, you can control the TV with your voice. The Stick is small enough to take with you when you travel, so you can plug it into a hotel TV, too.
The Fire TV Stick on sale last year was an older generation. The link above is for Amazon's newest Fire TV Stick.