Non dash damage advice

Hi all,

Got a lease car and want to stick one of those mobile phone disks on the dash to
mount a mob phone holder, any suggestions for a glue/adhesive that wont mark or
damage the dash when removed, I was thinking of using a silicone sealer but don't know
if it will leave any marks

Any suggestions welcomed, it's a Audi A6 if that makes any difference.

Maybe something like Sugru would do it. It's a kind of adhesive putty, which is removable.

If you stick it down for any amount of time it will likely affect the dash and also show some discolouring where UV effects the dash.

Go with a vent mounted clip on or similar and not something that will risk damaging the car.