Speaking of, I'm not sure how educational or politically correct, but both girls like to play: poker, poker dice, craps and roulette.
Especially DD8.
It was an education experience for my GD family when they realized that at 7 she beat them at poker almost every time they all played.
Weirdly, she also seems to win way more frequently than anyone else when we play roulette. Isn't that more of a game of chance?