Advertising in the clouds!

Flogos are taking your marketing to the skies, and then some. It’ll shape your logotype into a “cloudy” mixture of soap-based foam and helium - and send it off to drift for miles, as high as 6 kilometers up.

Any form can be made (of any color) and almost any specified location covered. The company seems to maintain that “flogo” shapes are environmentally friendly (they just evaporate after a while, and airplanes will fly through them like through any cloud.