How do you spark a young person's interest? You don't. Chance does. The best you can do is to introduce the person to things which that person would never think of alone.
In 1915 my great aunts gave my father Emerson Wulling, then twelve years old, a printing press as a Christmas present. It was neither hot type nor cold type, but rather rubber type. Rubber letters were set in channels on a cylinder that rotated over paper pulled from a roll. This press had the essential elements needed for printing: it required as a starting point a thought needing expression; it involved figuring layout, setting type, proofreading, and repetitive reproduction; and it necessitated living with the result, deficiencies and all.
The best synopsis of his seventy-five years of printing occurs in his note at the beginning if each publication in his series of Press Preterite - lists of 'readable' items which he has printed. I quote from these notes in the pirating spirit he mentions later in Press Preterite VI. - Thomas E. Wulling