Necessity is the mother of invention. I forgot my smoker on a recent trip to an out apiary and had to open a colony (to add fondant) that was livelier than I would have liked. However, I did have some egg boxes and lighter … a scrap of egg box smoulders for a long time and gives more than enough cool smoke to waft along the edge of the cracked open crownboard to calm the bees.
You can even leave it sitting on a (metal) hive roof until you need it. This is probably not a good idea if there’s any chance of of causing a fire but in the winter everything around here is too wet to ignite.