Hello, everyone! I am getting ready to retire my old Coach checkbook wallet and have purchased an "accordian" style zip around wallet. The only problem is that it does not have a place to put a pen, so you kinda just have to put one in the compartment and zip it up. Is there a brand of pen that anyone knows of that is very slender (length does not matter as much) that would fit nicely in there? The standard size pens fit, but they make the wallet look alittle bulky. Thanks for your help!!