Internet privacy it is a farce and companies are using the fear for profit. In reality the only thing you can do is decide in which company do you trust.
First thing you choose is the ISP, we all know that they are all scummy and get caught every year selling information, throttling services, lying, etc.
Then, if you want to be safe from your ISP you have to get a VPN and it is the same old story again. Even if you manage to never send or receive a bit outside the VPN you have to trust they are not loging everything and selling it.
It is a never ending story, because after that you have to trust the OS, the hardware manufacturers of each piece of your phone/pc, the modem, the router, the apps, and if you are talking with someone make it double because you have to trust all the same things from the one receiving the message.
People talks about huawei spying for the CPP like if things like PRISM doesn't exist. Every country has some kind of mass surveillance program and there is nothing we can do about it. If I were american I would prefer being spy by the Chinese that can't get me extradited.

I recently came across a cool video on youtube. https://www.youtube.com/watch?v=dxj8JwdQ7Lk&feature=youtu.be - The guy added a 4g connector to his rc plane and I think some extra batteries and managed to fly to the next island over.

I love stuff like this. Do you guys know any other current electronics that can be modded like this? Sadly it seems like most new consumer electronics come with their own small walled garden and often enough stuff just stops working once the seller goes bankrupt.

Other things that come to mind are:
Raspberry Pi
Arduino
ESP
But do you guys know whole systems that are moddable like this?
The Ryze Tello is a programmable drone, which is pretty cool as well.
I also saw some people modding 3d printers to laser cutters