flixr produces 3D printed shift knobs mounted with LED displays

Major credit is given to mitxela.com, from which the fluid simulation and LED display pcb was heavily inspired.

Shifters can be loaded with any display of your choice. Each display option can have 2 brightness levels if desired, this is highly reccomened as bright displays are blinding at night, and dim displays are hardly visible in sunlight.

By default shifters are loaded with fluid simulation, heart, and H shift pattern