Microsoft's Xbox One wireless controller adaptor accessory no longer requires Windows 10 to function - you can now use a PC with either Windows 7 or 8.1 installed.
The small dongle sits in your USB port and allows you to use up to eight Xbox One controllers with your computer of choice. It's handy for PC gaming, or Xbox One to PC streaming.
The gadget costs Ł19.99 in the UK, although obviously controllers come at extra. Still, if you already have an Xbox One, it may be of interest.