Reddit reviews BIPEE 50ml Round Bottom Plastic Centrigue Tube Screw Cap Graduated Laboratory Tube, Pack of 10pcs

Had no idea what a nunc cryotube was, but after some Google/Amazon-fu, I do believe you got me on the right track! Probably looking at something like a 50mL centrifuge tube (like this one ). Guess I'm need to first determine what the volume my "single serving" is and scale up as needed.

Would it be easier to keep things separate and use single serve creamer/sweetener from the store? Yes, but I'm also trying to keep my waste by-products down and go re-usable wherever possible.

Thanks for helping me get on the right track!