We were told we could use the Albuterol/Xopenex neb cup after it was finished for hyper-sal, which makes sense since hyper-sal is just salt water. Maybe check into that if your little one is doing hyper-sal as it would save 2 cups a day to wash.
I am an RT and was in charge of implementing the policies for the care of our adult CF patients at the hospital where I work. I spent a lot of time communicating with the Adult CF Clinic, so I will pass on what I learned from them and the CFF.
Always begin with your bronchodilator (opens up the airways): Albuterol or Ipratropium or Xopenex (usually mixed with normal saline)
Next use your Hypertonic Saline: Studies have been done mixing this with Albuterol in NON-CF patients, but for maximal benefit, you should do the Albuterol first. It will not hurt to use the same neb that your bronchodilator was in. HOWEVER, this "saline" will denature your Pulmozyme. That is why doctors do not want you mixing anything - so there's no confusion! Never put anything but Pulmozyme into your Pulmozyme nebulizer.
Next use your Pulmozyme (see statement above).
Your airway clearance device should be used during or after the Hypertonic Saline and Pulmozyme as this is when you are doing the most coughing and coughs will be most productive.
Finally, after the airways are clear of mucous, do your inhaled antibiotic (if you are on one at home) like TOBI.
At the very end, do your inhaled steroid (Budesonide, Pulmicort, Adviar, etc...). This calms the lungs and "seals" in the antibiotic. Yes, this is mixed with Albuterol sometimes, but in order to get maximum benefit, they should be done separately since one is at the beginning of your regimen and one is at the end.
Hope that helps.