Granny squares are fast, easy, and there are plenty of uses for them.
You can make up small ones in different colors and join them to make a quilt.
Join some granny squares end to end to make a nice scarf or even a belt. Fringe on the ends is optional.
Make two 12 inch granny squares and then crochet a panel about 2 or 3 inches wide using single crochet. Sew this panel to the sides of the two granny squares to make a tote bag/purse. Put a piece of plastic canvas on the bottom of the bag. Make a fabric liner to fit the inside and sew it in place. Add a shoulder strap or two handles and you are done!