This is called the "Weekend Wonder Granny Square Throw". My sisters and I have actually made blankets like this when we were teenagers and just learning to crochet. You just keep adding rows until it's a size you like. I've never done one in a weekend, but it does go by quickly.
Don't throw those pumpkin seeds away after carving your Halloween jack-o-lantern! Roast perfect pumpkin seeds! This post shares how you can make a deliciously healthy batch of this salty and crunchy snack.