mkanoap from instructables is passionate about Munckin board game. To play this game a 10 sided dice to keep score for each player. So he decided to make it more convenient and constructed an electronic score keeper directly on card storage box.
For this he used Attiny2313 board where 8 seven segment LED indicators are driven by max7219. Score is updated with three push buttons that allow to select player and increase/decrease score. Great idea that could be adapted to other board games as well.