Do you guys remember what the case to your childhood rectal thermometer looked like? Did the cap pop off or screw off? What color was it? Was part of it clear? Was it a tube style, or a little stand? In our house, we had two matching white plastic tube style cases with a screw top. I also have a faint memory of our original one when I was very young, that was also a screw top, but one section was pink, and other was baby blue. I think we got a new one when I was around 5 though. We did have the original massive oval shaped glass jar of Vaseline that lasted from as early as I could remember until after I left for college, which always was kept on the shelf in the medicine chest directly under the thermometers.