Try the internet to see what's available. Google "flutter valve attached to nebulizer" and see what you get.

HELP
A guy had a video on this sight explaining the process. I'm thinking it was a valve that attaches a flutter device to the nebulizer so you use them together. It was a great little video but I can't find it again. Does anyone know who this was and how I can view it again. I just saw it about 2 days ago.