The Citroen C5 X7 generation, launched in 2008, was mercilessly mocked and criticized for having a rather silly cupholder located inside the centre cubbyhole, beneath the armrest.
This solution comprises of using the tray beneath the radio and inserting this 3D printed double cupholder. It can hold various types of coffee cups, a 33cl can and small water bottles up to 0.5l in size.
Alternatively, it can also be used as a smartphone holder, though it cannot do so while holding drinks and vice versa. It can hold a smartphone up to 176mm in height and around 13mm in thickness (including a phone case).
PLEASE MAKE SURE YOU WATCH THE EXPLANATION IN THE VIDEO, as this solution may not be compatible with your particular C5 X7.
This is also a 100% reversible solution, so if you like, you can remove this and replace it with the original mat and use it just as before.
Link to purchase 3D printable model: www.cgtrader.com/3d-print-models/gadgets/other/double-cupholder-phoneholder-for-citroen-c5-x7