This tag is not for multiple video streamers. (Use livestreaming for that.)

Discussion about the tag(s) can be found here.
It could probably be used for :

• confetti_streamer : long confetti (made to be thrown)
• hanging_streamer : colored string (not sure about the word string) attached for decoration (not made to be thrown)
• flag_streamer : for a string with a lot of little kind of flags (a flag streamer is not a streamer flag)
• ribbon_dancer (or precisely for the tool used) : someone dancing with a "dance ribbon" (which some people can sometimes call "dance streamer"). No tag has been created for the tool itself : dance_ribbon (or dance_streamer).