patchwork quilts would work, or what about a jacob's ladder quilt? my mom did one of these with all her scraps (now I don't have any scraps to work with :( guess I need to make more quilts!) but she made a twin sized quilt and each jacob's ladder block was only 6 inches. She bought some red for some of the triangles. I don't have a picture on my computer but I do have the book she got the pattern from. It was given to my third grade teacher and she loved it, it will
take a while to make, but you could always make the blocks bigger.
You just rotate the block back and forth so when you have 4 pieced together you get an x. you can google it too
all the white pieces were scraps, the red was the only thing she bought