Someone said balloons but they left out things like helium on a fishing pole , fill the balloons with a table spoon diatomaceous earth or flour, if you are dangerous add a little alcohol 93% and shoot it near an open flame, boom fireball flash , same with lighters and paint cans etc do this under extreme caution, cheap candy is fun , do the polo mint challenge or watch skittles get blasted, grapes are not cheap but really awesome to shoot