The Anomaly is going to be a lot of fun. I think that even if your son doesn't play Ingress himself, he could revel in the sheer geekery and surrealness of it.
Also - since I inducted you into the culto to begin with, I should tell you of my favorite external battery: Anker 16,000 mAh (http://www.amazon.com/Anker-16000mAh-Compact-Portable-Charger/dp/B00N2T7U90/). You'll definitely want to get one before the Anomaly! I can play Ingress literally all day with this battery, and by the end of the day, I may have only drained it 1/3 of the way.
no subject
Also - since I inducted you into the culto to begin with, I should tell you of my favorite external battery: Anker 16,000 mAh (http://www.amazon.com/Anker-16000mAh-Compact-Portable-Charger/dp/B00N2T7U90/). You'll definitely want to get one before the Anomaly! I can play Ingress literally all day with this battery, and by the end of the day, I may have only drained it 1/3 of the way.