Hope it works for you! Yes, I just buy the cheap Glad brand containers, the ones that are about 3" deep and 4 inches wide and long enough for a plastic spoon to fit inside (it doesn't lay flat against the bottom, it has to lean). The ones they sell down here come with these little plastic cup thing that snap into the lid for salad dressing. Those are useful, too! I save those for all kinds of things.
I'd love to know if the containers solve your problem! Post the results!