In the middle ages, Christians sometimes took the books of the Maccabees very seriously. The Cathedral in Geneva, for example, had a Chapel of the Maccabees (it was later used as a storeroom, which is how it survived the iconoclasts during the Reformation). In general, anyone who wants to appropriate someone else's festivals can do so, but Christians usually ignore Hanukkah. It is a historic fact that, had the Maccabeean revolt failed, Judaism would probably have faded or taken a vastly different form that it does today, or even 2000 years ago, so perhaps Christians do have something to celebrate.