sticker set 'trink aus glas'
It's free, it looks cool and it has the right message. Take some, stick some and let the world* know what you think of plastic bottles (hopefully you think they're bad, because they pollute the environment for the next couples of centuries and stuff ...)
- only two sets per order with 5 stickers each -
Obviously, only the German-speaking part of the world. "Trink aus Glas" means "Drink from glass".