Considering the modern holy elders like Elder Iakovos of Evia and Elder Cleopa of Romania, they were influenced, but not forced, by members of their family. Elder Cleopa had the example of his brothers who were very devout and prayed often and Elder Iakovos had the example of his mother, who would rise in the middle of the night to pray. Little Iakovos saw her do this and imitated her, to the extent of leaving the house in the middle of the night and visiting a lonely chapel to pray. They did this because they saw that it was good and were open to it. It doesn't appear that their relatives' even considered teaching what they were doing.
This is great, thank you. I think modeling is the best tactic, no doubt. If it's a curious child and they ask what you're doing, I'm wondering how appropriate it would be to say, "We are supposed to remember God at all times, and the Fathers teach us to stand before God with our minds in our hearts, constantly crying out to Him 'Lord Jesus Christ, Son of God, have mercy on me a sinner.' When you pray, you should do this to, and here's how..."
I'm wondering if actually instructing them in the ways of pursuing continuous prayer is something we should try to do, or if we should wait until they're older.