HI!
I put this in the Art section...but then I thought it might be more of a crafty thing, :)
In the seventies, we would make sand candles at the CA faire, and they were multi colored, wavy sided and some had columns that looked like they were water carved, nothing was straight or formed in a cylinder. I have tried to find similiar merchants, but alas, have not.
Does anyone know where one might go to find such things?