Ive tried several things in presenting my digital negatives to my clients. Ive used regular CD trays, Art Leather folios and recently I was introduced to Jewel Boxes. Its taken some serious time to figure out how to design and make, but now that I have them the way I like, I am so glad I did. The come complete with my written copyright release on the inside of the tray, and the outside cover can be switched to three different outside pictures. Jewel boxes are also very durable and made of some type of smudge resistant material. If you are interested in doing something like this for your clients, check it out:

Jewel Boxing