The Steam Link is currently on sale over at Amazon, coming in at just $30. That is about $20 off of its retail price. It's definitely worth picking up if you, or someone on your holiday shopping list is a big PC gamer.
Steam Link is created by Valve and allows you to use different controllers to play PC games on your TV. It essentially mirrors the games from your PC onto your TV and you can play them using different controllers like the Steam Controller, PlayStation's DualShock 4 and the Xbox One controllers, to name a few. Many third-party Xbox controllers are also compatible. The Steam Link is a great holiday gift for any gamer, and it's small enough to actually be a stocking stuffer for many people. The Steam Controller is also available and works great with the Steam Link.
This is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.