When the weather gets cold enough, you can do all sorts of fun things, one of which is to blow bubbles that quickly freeze in the frigid conditions. You have to illuminate the bubble from behind to see the structure but each one is beautiful.
By mixing in some corn syrup or glycerin into the soap, the bubbles will have a bit more durability and hold their form while they freeze. I would suggest just doing an online search for the best formula…while most are similar, they will vary in the amounts of suggested ingredients.