One for our US readers; Samsung's running a promotional deal for the Galaxy S8, Galaxy S8+, Galaxy S8 Active, and Galaxy Note 8, where buying any of those handsets will entitle you to either a free DeX Station or free Gear VR headset.
The promotion is running from now until November 18 2017 but only applies to purchases made directly from Samsung's US webstore. Here's the link for the Galaxy S8, and for the Galaxy Note 8.
Samsung's Gear VR is pretty straightforward; it's a headset which you can use with virtual reality apps and games, and it can be linked with your smartphone.
For those unfamiliar with the DeX Station, it allows you to use your Samsung smartphone as a desktop PC, by linking it up with a monitor, keyboard, and mouse. It runs a full-screen version of Samsung's desktop interface, so you can write documents, edit photos and more, all on your phone, but with the convenience of a PC.