We do all come from different walks of life and we all are in different walks of faith as well. We shouldn't pass judgement on the kids differences and home lives, but instead show them that the church has what the world has to offer PLUS the love of the members and most important the love of JESUS CHRIST! God will guide you, but don't let your humanly opinions (which are agreeable) be your passion behind your youth leadership. God and his love, will, patience, understanding, and forgiveness is what will bring these kids on God's time to the lord for the right reasons.
Personally, I believe ensuring the return of the kids is the most important, because like you said some don't own or read the bible, some have little relationship with the lord and spend most of their time in front of some sort of screen. I think the sofa at church interacting with others who have God working in their lives is a step up. With that said, you and your husband doing what you are able with the Lord's direction will be a great influence on these children. Go sit between the kids on the sofa and join their conversation and apply it to our lord, show them that in EVERYTHING they do, see, learn, or whatever is our LORD! Or bring the prayer to them!