So the day after I found the cool outdoor ad by Pool for Gröna Lund I found this on the subway – an interactive shuttle ad. This one is also made by Pool, they’re on some kind of streak. The copy translates to something like:

“This is how it sounds when a bombardier bug frightens with a gas bomb.”

I can’t imagine a better way to make an ad. Bubble wrap; the most loved material in the world. I couldn’t believe my luck when I found a few un-popped ones.