I read the request and remembered a website I stumbled upon once - iI had the biggest collection of "novelty" and "specialty" clips I had ever seen, including "logo" clips with a circular area in/on which you can mount pretty much any logo you want. In fact, if the logo you want doesn't exist, there is an option for custom ones.
I remember going through the selection and thinking that I was going to have to make a billion pens for friends, each interested in or affected by some of the billions and billions of logos available.
So, again, I read the original post and began to search. I searched and I searched and I searched. Then I searched some more, and I still didn't find what I was looking for.
I gave up, secure in the knowledge that someone out there would be familiar with the site I had in mind, and clicked on the link Alfred posted - just to have a look at the site he was recommending.
Wouldn't ya know it? Yup - Alfred's link is to the site I was trying to find.
In the immortal words of the ol' Homer, "Doh!"
Cheers!
Gary (gonna have to make a LOT of logo pens for friends....)