Sometimes the cover on your book is going to be really ugly or the spine is going to look really tacky, and that's going to look embarrassing on your shelf. Luckily, you can get covers for your covers. I've posted before about a couple of great jackets, but I just spotted these and wanted to share them as well.
The Simple Modern collection from Juniper Books is really nice, especially if you're one of those people who organizes their shelves by color or genre or something like that. I love the type within the type used here:
Juniper also has covers that look like vintage hardcovers, which is also pretty awesome.
(all images / found via Design Milk)