Actually, it's easy.
If you asked a TV or radio producer what they want for Christmas, the response will very likely be "A guest to talk to".
Over the Christmas and New Year period, the media still operates, but guests are hard to find. It is often the easiest time to get on air, and because the audiences tend to be large, it can be a very good time too. How to get on air? Call them and tell them how much you enjoyed an earlier item. Ask to speak to the editor or producer. Chances are, they will ask you if you are available to chat.
If you receive a call from a journalist, asking if you might be available for an on-air interview in the next few days, say "yes" - even if it means missing a couple of hours dozing on the sofa in front of a repeat of that comedy show that you never really liked anyway. You'll be glad you did. It could be the start of a new career.
Have a happy media Christmas.