German innovation agency Hyve has started open innovation campaign for Japan: Your Idea for Japan
Suggestion can be made according to following questions:

• How can we express solidary towards Japan?
• How can we collect money in an unconventional and encouraging manner?
• How can we help the homeless people having lost everything they possessed?
• How can we make their life in the emergency shelters more comfortable?
• How can we prevent an extensive radioactive contamination of food, water, ground and air?
• How can we successfully handle catastrophes like this one (especially in the future)?