Some key chains are simply decoration on a key ring, while others serve an additional purpose. Some of the other promotional key chains we carry have an additional function, including use as a pill holder or business card holder. In terms of promotional use, we have strictly advertising key chains, called valet key chains, that have a paper insert for you to slide in a full color logo for your company, brand, or organization. As all of these are promotional key chains, even the pill and business card holders have a place for an imprinted logo, be it by pad print or engraving. Hand these promotional key chains out to your employees or at trade show events.