Disposable neb cups come to mind for your travel. Try them ahead of time to see if they might be a possible solution for you. That way you'll eliminate sterilization of neb cups altogether. For the Aerobika, consider breathing out only through it rather than in and out. Still mouthpiece would need some cleaning. And/or research and practice new airway clearance techniques that eliminate Aerobika. Although I use Aerobika from time to time the majority of the time I use the autogenic drainage app with a plastic tube in my mouth followed by active cycle of breathing. The Dr. McShane Airway Clearance video demonstrates this. I think.