Sew4Home shows how to make their Unisex Urban Shoulder Bag. Pockets on the outside hold a phone or other small gadgets. The bag itself measures 15″ x 10″, large enought to hold a standard laptop. The shoulder strap is both adjustable and removable. A pair of short handles allow you to grab the bag up in your hands as well. Go to the tutorial.
[photo from Sew4Home]