Asset Basket is a community donation drive designed to help solo or small-team developers create games. Creators of discrete game assets like backgrounds, sprites, graphics, 3D models, music, sound effects, libraries, and other tools will submit works that can then be used by developers who wouldn’t otherwise be able to afford to pay for assets.
The link says “jam”, but that’s not really accurate. Existing assets are welcomed with enthusiasm!
If you’d like to submit anything to Asset Basket (or use anything from Asset Basket!) the submission window will be April 15, 2015 to May 14, 2015.