I also really needed something to carry my laptop in. I didn't want a whole laptop bag, something I could throw in whatever bag I was using instead. Originally the outside was going to be more interesting, with a stencil or applique or something, but I ended up simplifying it.
The lining is pretty sweet though.
Finally, I started using a new wallet that doesn't have a lot of room for cards (or any room really, I've just been shoving my license and debit card in with my cash, I need to fix that) so I needed something to carry buisness cards, giftcards, etc. I made this out of a Duran Duran tape that was damaged and didn't play right any more. And yes, I actually listen to tapes, and only craft with damaged ones. I'm oldschool.
It also has a pretty sweet lining.