The bag I use for my laptop was originally one of my mom's totes. I don't think it has a brand - She got it at Dillard's for about 24 bucks! It's black and has compartments. It looks like a purse but can fit my power adapter, planner, laptop, cell phone, charger AND portfolio WITHOUT looking bulky.
I'll post pics tomorrow. ETA: I'm going to forget to add pics, so here's a purse that looks practically identical, except this one is some 200 dollar more. (Michael Kors)
ETA: It DOES have a brand, lol. It's called - Preston & York. It's black leather with white stitching and silver metalwork. The interior is some super funky pink green blue tan combo, lol.