The child cries to have toys, but one who can cry for the Lord in love is certainly successful in the line of devotional service.
Whatever devotional service we may have, we do it for seeking the shelter of the Lord, not for our mental or physical enjoyment.
Teach them Krishna Conscious Art at early age, so they may advance in devotional Service.
The real result of devotional service is the awakening of pure love for the Supreme Personality of Godhead, which continues under all circumstances.
Srimad Bhagavatam 5.24.19,
Devotional service to the Lord is not an activity of this material world; it is part of the spiritual world, where eternity, bliss and knowledge predominate.