This is a very thorough tutorial which shows you how to make a hooded cloak or cape without a pattern. All you need is five yards of your favorite fabric (pick something durable and sixty inches wide), then cut out some basic shapes and follow along the sewing tutorial
This tutorial shows you how to make a Renaissance or medieval costume blouse. You will need a sewing machine and about a yard and a half of fabric. You don't need a pattern, just one of your own shirts to use as a fitting guide.