Over at GeekStuff4U they have an assortment of card holders that are retro game themed! I would use the term “cute,” but I think awesomely geeky is more appropriate. They range from $22 to $25 dollars and come in a few different designs.
They have two different compartments so you can get your geek on and stay organized while doing it. More pictures of the cards below the cut.
[images via GeekStuff4U]