To the realism of the game and what to improve on, I have a Boeing 737 Trip Reminder Indicator is installed on the yoke. This indicator is also known as a "Trip-Counter" as well.

This indicator is normally found on the Capt on the right-hand side, and the F/O on the left-hand side of the yoke.

Initially, one has to use this indicator to get the pilot to remember the flight number (call sign) is. I've been using it to get to the landing speed (VRef) to be installed as a memo.

Further information and photos can be found on the following link:
https://www.flightdeck737.be/hardware/yoke/