One of my favorite sewing projects is making a pair of shorts. They come together fairly quickly, use a relatively small amount of fabric, are super comfortable, and fit my summer uniform, which is typically shorts and a tank.
I use the free pattern from Melly Sews, which fits S-M. (You can purchase her pattern for the full range of sizes, or use her slash and spread tutorial to increase the size of the free pattern.) I find the shorts fit well, but are too short for my taste, with just a couple of inches to the inseam.