How to decorate trombone for Christmas?

My band is marching in a Christmas parade and we have to decorate our instruments. I play trombone and I'm not sure what I can do for it. The colors are limited to blue and white or so this year. Any ideas? Usually we use things like bows, wrapping paper, ribbons ect. I've heard wrapping ribbon around the slide, but any other ideas? Parade is Friday!