Innocentive is a platform to promote open innovation and crowd sourcing for solutions to important problems. It has a "Developing Countries Pavilion" to focus on innovations that are especially important for the developing world.
Innocentive currently posts a challenge that calls for designs or materials for a storage bag, container, or vessel that protects seeds and grains against rodent infestations. Requirements include durability over several seasons, low cost, and feasibility for use in developing countries. The winning proposal will receive US$20 thousand.
Guidelines about how to participate in Innocentive are provided on its website. Participants need to register (free). Proposals need to be submitted by 21 November 2012.