You could, those ones are from the web, in the past I've used rush, string, zippo wicks, there was a bit about cotton mop heads else where. For fuel veg oil, rendered fat, fish oil, lard. They are pretty and the shell helps reflect the light. The best thing though is eating the scallopsYumYum. Most curved or spiral shells will do, big whelks, mussels, razors . White shells reflect a bit more light.