My Halloweens of yore would sometimes revolve, unwisely, around tin cans, tennis balls, propane and a Bic lighter.  I remember one year quickly shucking off a highly flammable Adidas tracksuit as it started to go up, so, yeah…unwise.  But, oh, what I might have achieved with a Vortex Cannon and its 200 mph “cloud!”  I’m not sure it’s any more safe or stable than what I was packing, but I’ve got a feeling I would have ended my Halloweens with a ton more KitKats.