QuiltCon is sponsoring a QuiltCon Block Challenge. The challenge:

use the colors of the QuiltCon logo to make a quilt block that reflects what modern quilting means to you.  We encourage you to stretch yourself and plan an interesting composition that represents your own unique voice.

The colors are fabulous (and can be purchased as bundles from QuiltCon sponsors):

(photo from QuiltCon website)

Check out the QuiltCon website for all of the submission details to get involved. You can also post your blocks on flickr and see what everyone else is submitting.