The DJI Nano is the camera you simply want, whether you actually need it or not. Either way, you're in luck, because the footage it produces is fantastic (okay, you do need to have something good to film yourself). The camera can shoot in 10-bit, D-Log, and 4K (up to) 120 fps, allowing you to add your signature touch in post-processing while maintaining quality. Incidentally, the footage produced by the standard color profile is also excellent to look at. Furthermore, features like Rocksteady, horizon lock up to 30°, and vertical mode are all built in.
With this camera, DJI has revisited an old design that we couldn't quite understand why it had to be shelved after just one model.
The fact that the camera and screen are two separate parts works exceptionally well in practice. Because the camera module is so small, you can easily press/click/place/throw/roll it onto/on/in/under/etc. You can simply hold the screen in your hand so you can immediately see what the footage looks like. You can also start and stop recording with this module.
The Nano is fully compatible with DJI mounting accessories. Simply click it in and go. In addition, up to two (DJI) microphones can be connected without the need for a separate receiver. And that's a huge plus in practice!
There are also drawbacks, although they're not life-threatening. Online, you're constantly being bombarded with the so-called "overheating gate," although I haven't experienced it myself. Filming for over half an hour in 4K 30 fps was no problem, although this may be due to a recent DJI update that supposedly addresses the overheating issue (partially). Furthermore, the materials used are "meh" compared to the Action 2, and the battery doesn't last all that long.
All in all, a really fun camera with which you can capture many creative shots and which you'll mainly want to have as an extra. As a bonus, the images are also of superb quality!