I hold a kung fu contest..... make a floating metal platform,make another one on the bottom,make hte bottom one have lighting around it,and watch the fight.
or,make a survival game out of it,making some type of house inside a volcano(magma),add some nitro and BOOOM.watch and see if they survive.Mostly no,but it's funny seeing them squirm around kicking eachother's asses into some pit.