I don't think my setup is very interesting, but here's just my thoughts on it:

I use a CAT S52, which is a rugged phone marketed as Caterpillar. It is sturdy, waterproof, military specced, can be handled with gloves, runs the better part of a day on battery. I acquired it for €250,- but unluckily follow-up S53 is quite a bit more expensive. I use this specifically for navigation on my motorbike, and for geocaching purposes. Why not? it is a lot cheaper then a Zumo XT. Only backdraw so far is that its brightness is a bit less, but so far it sufficed. I am planning on designing a visor for it this upcoming winter.

For the mount I use this OptiLine stuff. It fits my existing RAM ball. Because I use the CAT not for a daily phone, I have no problem sticking the adaptor plate directly to it, without an extra bumper-cover, which is bad for heat-dissipation anyway. Optiline does not offer a vibration dampener as far as I know, but a military specced phone does not need any. I chose this OptiLine because it was way cheaper than a Quadlock or SP Connect. I am very content with it.

My charger is one like this. It's fitted directly to battery with an inline fuse. I did not want to mess with the BMW canbus, and this way I can charge my co-riders stuff or my own headset, while drinking coffee without the engine running. Also it does not make much sense to have a Voltmeter only running when ignition is on. The thing can be switch off and does not leak any current. Since I ride a naked, I had to invent some mount to make it look nice. I think my 3D printed mount does a great job in that regard 

I did built a BarButtons and printed the case myself. I tried to upgrade it with a magnetic mount but that was not very succesful. It wobbles while pressing buttons
. I have thoughts about a powered mount instead, so that you can easily detach the unit from the bike while leaving the the powercord neatly attached to the mount. But to be honest I use the BB seldomly, so I am not sure I will go on with this idea yet.