While there are lots of elegant, distinguished letter openers in the world, but the trusty advertising letter opener made of plastic with a concealed blade is my favorite. I have two. This one came from an envelope company and I keep it at my desk. The other is a vintage opener that looks the same with advertising on it for a Florida Days Inn which I keep in my traveling pencil pouch. Do you use a letter opener?
I actually posted about this pretty recently! http://annes-mail.blogspot.com/2012/06/im-curious.html
This is my favorite kind of letter opener. I miss mine so much! It broke years ago and I still think about… poor plastic heavenly device. /sigh/