I just got a new car and while I was going through all of my stuff, I pulled out my old plain auto wallet. You know, that thing that you only pull out when you're asked to show your licence and registration? well mine was the standard black bi fold wallet with Velcro, so I decided to spruce it up. It literally took less than 5 minutes. and it's not perfect but it looks a hell of a lot better!
All you need is your boring-old auto wallet (journal, anything else that needs a face lift)
washi tape - I got mine on sale at Michael's so it was only a few $ and it's a pretty big roll so I'll have it for awhile!
the only other step you might want to do is clean off the wallet with a little Windex to make sure that the tape sticks well. other than that, get to it!