And while these streaming dongles won't exactly break the bank, savings to are there to be had. Which makes them even harder to resist.
For the uninitiated, the standard Chromecast dongle is a way of adding video services such as iPlayer, Netflix and more to your TV, while the Chromecast Audio is a brilliant way to turn any traditional hi-fi into a streaming music system. Want to watch 4K content? You need the Ultra.
MORE: Music streamer reviews
Best Chromecast deals
Tested at £69 / Now £69 at Currys PC World
Doesn't look like much of a bargain, but this deal on Google's 4K streamer comes with a 3-month Now TV Entertainment Pass for £5 (usually £20).
Tested at £30 / Now £20 at Currys PC World - saving £10
Google turns its hand to music streaming, with seriously impressive results - and you can save 33% with this deal.
Tested at £30 / Now £30 at Tesco Direct
Another deal within a deal: this comes with a Now TV 3-month Entertainment Pass for £5 (usually £20).
MORE: Best TV deals