Sometimes the simplest devices can also be the most useful. Take for instance a dash pad.
It’s just a rubber square, uses no adhesives of any kind, yet it’s capable of keeping your iPhone, your keys, spare change, even your radar detector (if you’re into that sort of thing) from sliding off your dash, even under spirited driving.
They are movable, washable, completely reusable. And best of all, they’re very affordable only $4.97 Non-Slip Dash Mat.