Little buggers were playing before they went off to school this morning, I'm gonna have to book in some free time in to hone my skills 

Now that brings back some memories. Back in my school days 1960/70s, we used to stop off at the local milk bars or barber shops to have a few games before and after school.  Gottlieb wedge heads ruled the roost at 3 games for 20c. Every suburb in Sydney had at least 10 machines scattered around various shops. Our kids are lucky they can play games at home these days. Keep them playing, that's how we learned.