Here's what I have. Works great.
https://www.amazon.com/gp/product/B01HDO66NK/
https://www.amazon.com/gp/product/B088CYWT5H/
I just wish that power port in the armrest didn't turn off when you turn off the engine. Kind of a strange decision on BMW's part, but there's nothing you can do to change that, I guess.
I have this one.
https://www.amazon.com/dp/B01HDO66NK
Plugged into this phone charger.
https://www.amazon.com/dp/B088CYWT5H/
I was a little worried that it wouldn't fit in the center console without hitting the lid, but it works good.