Your mom told you never to leave loose coins on the dashboard or your eye glasses or anything else. And for good reason. Dashboards are hard slick surfaces and it doesn't take much for everything you set there to start sliding around, eventually onto the floor or at least out of sight.
But your mom didn't know about Heininger's CommuteMate DashGrip. Simply lay it on your dashboard and you have a non-adhesive sticky surface that you can set all your loose items on and know they'll be there when you get to your destination. Want to move it? Simply pick it up. It doesn't leave behind any marks or adhesives. It's like having your own portable anti-gravity mat.