Great question and what a great activity for students! An 8oz mason jar should be fine since you don’t need to mind the fill line like you would with liquids.

Finally, someone who understands that a marriage or long-term partnership is *not* governed by friends and family. My husband and I decide what we tell each other or don’t. We have our own life and level of privacy together. We don’t hurry home and give each other a report of every little thing that people told us, but one of us might mention [situation] if we’re ever talking – alone – and it’s relevant to the conversation.