eco friendly events

eco-friendly advertising ideas please!?

I work for a charity whose main objective is to reduce waste, we are about get a grant to help promote our being and does not really want to print next to a pile of brochures colors. some ideas that we inovately further promoting the contributing to land fill? we are planning to do a lot of posts in the events during the summer so will need a bit of material but the ideas about this and other forms of advertising welcome

Give some large grocery bags environmentally friendly with all the information printed on the front the bag. There is great visual ad space and a large quantity of bags to appear around the city is a great brand. Pick a color different then most. Green and blue are the more common. What canary yellow?

Eco Friendly Events: 4th Annual Eco Casino Party By Brian Worley