How about another BBQ, since I missed the last one, LOL! (J/K)
The topic of 'kids-oriented programming, circuits and robotics' sounds good to me. ;-)
Somewhere in my house I have an old R/C tank that my Dad gave to my son when he was 5. And then when he was just 6 years old, my Dad passed, so the tank became even more valueable to Joe. But somewhere along the line, it died (electronically, probably due to Joe playing with it in the snow, LOL!), so I started to convert it to use an Arduino to control it, and intended to intended to use Bluetooth modules to communicate between the Arduino controlling the motors and the Arduino reading the controls on the remote. But, alas, like many of the projects that I start, I got side-tracked by life and never got back to it...
But I could probably find it and 'ressurect' the project in time for the meeting and do a little 'show-and-tell' about it. Heck, maybe I can use it to get my son (who's now 24) into programming and electroncis... ;-)
Jeff