Tupperware tumblers from the My parents still have these, with the snap on "pre-sippy cup" lids. I remember taking them on car rides with a pump-Thermos of water - each family member had a "color" for the trip.
Okay, please don't tell me I was the only one who thought that "No Tears" meant crying tears opposed to tears, like split ends, in your hair! Oh, childhood. I always thought it was no crying tears because of the eye