I'm thinking of some sort of one-time use weapons (Like 5 shots), it can be whatever from WW2 to fantasy weapons (I like fantasy ones most). This could be oused for item boxes that gives you a weapon and dissapear for like 15 secounds, could also be used for Mario-styled races. Have anyone ever played Rayman M? like that.
And now when i'm thinking of it, Why not make a Player race MOD, like where the players start at the spawns, and the first one to reach a special brick wins. (I'm too lazy to figure out if this can be done with events.)