[lukevanoort]

Unfortunately,

Originally Posted by 2007 FRC Rules

3.11.2 Competition Spirit
We ask that you choose to bring attention to your team in ways that are in good taste and in the
spirit of the competition. Please refrain from the following:

• Using obnoxious noisemakers.
•  Using objects that can damage bleachers or floors.
• Taping or affixing items or papers to walls, bleachers, floors, or other site areas.

Personally, I'd classify these as obnoxious noisemakers. Mind you this little tidbit from the rulebook is probably second only to the saving seats rule in how often it is ignored.