If you're looking for a unique, slim, and light case in which to tote your laptop and also want to make an artistic-type style statement, the GG2G Foleo ($56 direct) fills the bill--and it's made from recycled materials, too. What could be cooler? These necessarily one-of-a kind bags are crafted from recycled highway billboards, of all things, and can come with or without bamboo padding--your choice.
The bag is sturdy and nicely made, and the "re-vinylzed" water-repellent outer material has a sleek, shiny look and feel. All the Foleos come with a handle on the side (though you may not see them in the Web site's images), so you can carry the bag that way or tuck it under your arm like a clutch. The Foleo has one inner pocket--a thumb drive compartment. But if you need more storage space, you could easily stash this sleeve inside a larger case.
The Foleo bags pictured on GG2G's site are all currently available. Once a bag is purchased, it's replaced by a new one, and no two look exactly the same. But if you have your heart set on a color palette, you can email Dayan Moore (a co-owner of GG2G), and she'll do her best to help you out.