Thanks for your reply. Now that I have a bit more of an understanding of your presentation, I like what you've done with it. However, I feel that having the participants ball up the papers, including one containing the makibishi, makes them handle it too much and come too close to it. If the makibishi is a dangerous and scary object (and originally meant to be coated with poison), I'd want the participants to be "hands off" with it - using paper cups is the conventional way, but perhaps other kinds of covers could be used so that they don't actually handle the makibishi.
Thanks again for the video.