Steve, some of us have a grey hair or two and remember tubes/valves. As a matter of fact I were involved with the first transistor radio ever produced in Denmark after working on units that "glowed in the dark". I do not envy you youngsters, the weaker my eyes get, the smaller the components, just visualize what you will have to contend with when you get the glasses (sorry Steve, Spectacles) to go with the grey hair.
Anyhow do remember:
Have fun,

Erik