Put a ringtone of the Christus Vincit (Radio Vaticana-like, cheapo organ version) on your mobile.
Set it as your alarm tone, as well as your incoming call tone.
Set yourself alarms for, say, every ten minutes that you'll be out in public.
Make sure the volume is set to very loud.
Go out for a longish walk where there are lots of people.
WARNING: this really embarrasses 17 and 14 year olds. Make sure they understand "Be a fool for Christ's sake" and let them go and buy the paper and some milk, and don't worry when they try to pretend not to be with you. Then tell them they can go by themselves to the funfair this evening.
My ringtone has verses, never mind just the chorus!
Happy Easter, everybody!