Now on the topic of sushi...
Try playing a game:
Have # of sushis (not the rolls, the ones with rice and fish) on the dish, smother some of them (depending on the amount of people in the game) with tons of wasabi between the fish and the rice. Then everybody pick one (or take turns if there are not a lot of people), and watch the excitement of the lucky ones who picked the ones with wasabis.