Identify your phone charger cable with your name.  A small block 6 cm long x 2 cm wide x 1 com rides on your charger cable.  You can customize your name to ride on top of this block.  The Openscad file uses Google's Permanent Marker font which you can download here https://fonts.google.com/specimen/Permanent+Marker

Print in contrasting colours so that the name stands out.  I print in PLA at 0.3 mm layer height.