This is our set up for now. We made it in a pinch while in VA, hence the duct tape, lol. Everything breaks down for easy cleaning. And you can't see them in the pictures but there are vent holes in the sterilite.
This thing has been a life saver for Kumar and Dexter. Kumar is intolerant to just about every AB but getting them via nebulization has worked great for him.
I just pop a towel in there for comfort. They've all handled it quite well.