We kids of the 50's seemed to all have a "Doctor's Kit" or a "Nurses Kit". Like many, we used candies (Smarties) as the drug of choice. One thing that was absent from our kits, but certainly not unavailable, was the bulb syringe or enema bag. How could one play doctor or nurse and not have to prescribe an enema? At least for us old farts, such treatments were so common back then, that it seemed only natural.
I, for one, am now most interested in playing Doctors and Nurses as adults. Fortunately, some of that equipment is still available!