Ever since I waterproofed my boots on the patio I have been left with an intermittent reminder of the task – every time it rains, the silhouette reappears only to disappear when it dries. I have always thought that this concept was an untapped marketing opportunity – why not do art or graffiti or advertising in waterproof spray – leaving a seemingly pristine surface in dry weather and an unexpected message when it is wet.
This could be used to point people into stores: “Umbrellas sold here” or “Come in out of the rain and check out our clothes” or “Hot coffee to take away the damp chill”. Art could be ducks enjoying the puddles or other weather-appropriate designs, etc.
I just learned that I wasn’t the only one with this idea. The Rainworks organization has been doing street art using Superhydrophobic coatings and have achieved the same effect – providing hopscotch grids and messages on sidewalks and leaving a bit of joy during otherwise dreariness.
What message could you hide until it rains? Surprise someone by putting a can of waterproofing spray to a new use.

