Anti-slip mat on the dashboard
So that mobile phones, keys, glasses and other trifles in the car no longer slip off the dashboard, because no suitable troughs are available for storing, you can pieces of a non-slip mat for the trunk (looks like "woven", 1.50 euros in the hardware store , depending on the size) and place them as desired on the dashboard. For this purpose, the dust should be wiped out first, which may have formed (as with me) over months :).
Now even lightweight parts such as sunglasses or cell phones have a firm hold and move even with rapid cornering from the spot.
