Do you mean with your own hands or using a machine? Knitting sweaters as well as vests (wear them in winter to keep the heat bill down), is easy and fun - no two are ever the same. With a sewing machine, the sky is the limit. If you can't find a pattern, an old blouse or skirt or whatever else can be deconstructed to make a pattern from. Even hand sewing is an option, it just takes longer. All you've got to do is try.