Don't think it'll take much to convince kids pinball is fun. Most that have been here
and seen pinball machines for the first time just jump in. The idea is to plant the seed.
Two things will discourage kids from getting their own; the crazy cost and lack
of ability to maintain them.

A neighbor just showed me something he got for Xmas. PinBox 3000, which is
a cardboard pinball kit. Very well done but a toy at best. A nice gift for young
kids that might lead to interest in the hobby later on in the same way apps do.
Steve