Well known German ad agency Jung von Matt/Neckar released 200 flies with attached banners to promote the Eichborn publisher. Eichborn has a fly in their logo, so it was not that far fetched, but as you can see in the video below the flies look quite awesome.
I first thought this was a bit cruel, but the ultra-light banners were attached to the flies with natural wax and after a short time the banner dropped off by itself. Jung von Matt said that no fly was harmed.
Insect advertising could become a new hot trend. Ants are very strong for instance. They could carry banner signs into your house.
See the video of the little airplane banner flies below.