Earlier this week, I heard about Quilts for Kids. They take fabric that was destined for a landfill and make quilts for sick kids. Right now they are sending some quilts to Haiti too.
If you are a quilter, you can request a kit from them. It comes with all the fabric you need, you just supply the labor and the batting and send it back to them. I also plan on raiding my stash to see what kid-friendly fabrics I can put together to make another quilt too.
If you are not a quilter (or do not have time to make a quilt), you can make a monetary donation too.