Party Blowers to Noisemakers?
My computer won't let me see the picture, so this answer might not be helpful. Assuming we're talking about the regular party blowers, the only issue with trying to add a reed to make noise are space and ability. There's not that much space for it to go, only about an inch in the plastic tip, but the tube is very small. Second is actually getting it in there. Putting it in the hole then trying to attach it would be hard since most of them are glued together, and you can't pull of the tip. Unless you can figure out a way to build a reed that's small enough, and get it in there, you might have to get back and buy some other ones.