Again, it's Christmas gift-giving time. In today's 1st Reading from 1 Samuel 1, Hannah the mother gave Samuel the child to the Lord.
What would be the best thing for us to give to God? It's easy to give what we don't need or from our surplus without hurting ourselves the slightest bit. I think the best gift we can give to God would be ourselves, for he deserves what's most precious to us. A side-benefit: once we surrender ourselves to God, all subsequent giving becomes easy and painless.