Be a Plant-Eater for one month. No meat, no dairy products. Google/YouTube on 'PlantenEter' and you will get inspiration. You will do good for your own health as well as the health of the planet and mankind. Chance that you will continue after one month is rather big. Making it a good investment into a new and better lifestyle. An idea from Hans van Dam
Meet Sir Ken Robinson and make possible that his book "The Element" be given free to some schools, universities and libraries in Madrid, Spain...where people need to use their creativity and innovation more than never. Teachers, please, read this book and spread its knowledge!!! An idea from Crischinagirl
Smile to everybody you have eye contact with. An idea from Li
On the 21th of September the Netherlands celebrate 'KeepItCleanDay!'. All illegal litter will be removed from the streets, the parks, rivers, forest and public traffic system. It's a grass root initiative and we work without money! So... Why don't you empower the whole Rotterdam to join the KeepItCleanDay! www.keepitcleanday.nl An idea from Annette
Experience the power of giving! Try to give away 29 things for 29 days. For example you could give a compliment to railway personal, buy a cup of coffee for a stranger and give some money to an unknown charity. It will make your life better too :-) Check this out: http://www.29gifts.org/ An idea from Claar Grooten
Create peace in the Middle East An idea from Chantal D
Live 1 Month Without Spending Money. An idea from Jeroen
Why think small? Find out which of the Millennium Development Goals are lacking behind on schedule (my gosh, 2 years and 2 months left until 2015!). Then try to give one of those goals a big boost! Invent your own creative and fun solution to this particular global challenge, and 'test' this on a tiny scale, here or elsewhere. An idea from Marije
Organise a neighbourhood meet & greet. An idea from Jaco