Show practical thing people can do themselves. Changing a tire, fixing a bicycle, etc. This (together with watching Macgyver :-)). Sure it's easy and sometimes

Show practical thing people can do themselves. Changing a tire, fixing a bicycle, etc. This (together with watching Macgyver :-)). Sure it's easy and sometimes cheap to let someone else do it. But I think teaching kids how regular tools work, is an important first step. (My down owned a saxophone shop and used to let my brother dismantle and re-assemble old saxophones, that was a great engineering lesson for him).