When you choose decorations, please make sure your instrument will still function and you can still see the music when you are playing. Make sure the decoration will come off cleanly – valve oil will remove masking tape residue.
Sorry, no fireworks sparklers are allowed, but battery-powered Christmas lights work great. Here are some 10-LED sets available from Dollar Tree in several styles, and they use AA batteries. Go for it, buy two sets!
This fabulous pink Sousa was in the Chicago
TubaChristmas at the Palmer House a few years ago.