I got the most use out of these. Semi-disposable, but I'm still using some of them a year out, so that's not so bad. They're 4 oz. rather than 3 oz., but you'll be there before long anyway.

I also used the little 2 oz. jello shot/dressing containers you see everywhere. They're much less reusable, but it's a handy size to have around in the early days.