Yellow Brick Road seems really quick, I used the pattern-directions, but did it in pinks and greens as they are my mom's favorite colors. The directions tell you how many FQs needed, cut and strip piece. Now I need to quilt it.
Also Missouri Star Quilt has a tute on a fast block with 3 seams. They did it with a cake layer pack, and had large blocks. Some on here did the same pattern with smaller squares, making smaller blocks.
Large pinwheel might also go quickly.