Apparently (after 13 yrs of use) my merc has a gap between windshield glass and the dashboard. I left my main credit card on the dash and it slid inside.
There is a gap/pocket between the dash and the adhesive that bonds the windscreen, the gap is deeper at the centre than the sides.
The picture shows the bottom of the windscreen area before the glass was fitted on a W202, your car might be a similar set-up.
It should be possible to fish out the card with something like 2 long piece of cardboard by attacking the card from both sides.
2016 L450 Range Rover 4.4 AB, 2015 GTs 2017 Range rover evoque
Take the panels off under the dash, you can see right up there in places but I say it will fall out the bottom unless its stuck on the sound deadening.
yeah I thought of tweezers myself found some and pulled it off!
4 inch long only but did the work. the most difficult part was to do it blind cos there is no way to even push a phone camera - the angle is too steep. and the glass completely blackened down there to look from outside..