I watched a Billie Lauder video on www.quilterstv.com last night on making scrappy 4 patches using any sized block you want. She sews a bunch of blocks together and then into a tube. Cut them back apart with the stitch line in the middle to make a sort of two patch. Sew the two patches together and then into a tube. Cut them apart and you have stacks of scrappy 4 patches.
I also used 5 inch charm squares to make bow ties. They cut quickly and sewed together pretty easily.