This is the finished product! The Organized Office Bag from The Bag Making Bible by Lisa Lam, or as I have been referring to it "Dad's Bag" as it is my Dad's birthday present.
I had to learn so many new techniques for this bag, starting with working with Home Dec weight fabric, adding the twist locks (during which I shoved my seam ripper into my finger-ouch!) making the adjustable strap, and attaching gussets (the sides.) The whole bag is lined with fleece and medium weight interfacing to keep it sturdy and protect his laptop.
Inside the bag I learned how to do a flush zip pocket, which was hard but ended up turning out very well. It also has a penholder pocket and an elastic top pocket, I put a water bottle in it for the picture but I'm sure my dad will use it for something else.
On the other side of the interior it has a laptop harness to keep his laptop from moving around. Even with the pockets full and the laptop in there he still has plenty of room to put in files or catalogs or whatever else his heart desires...except his golf clubs, which I know for SURE he carries in his car at all times, lol!