We are truly very blessed and in trying to remember to say Grace before every meal, I stumbled upon a good prayer...
Almighty God, whose loving hand
has given us all that we possess:
Grant us grace that we may
honor you with our substance,
and, remembering the account
which we must one day give,
may be faithful stewards of your bounty,
through Jesus Christ our Lord. Amen.
-- from the Book of Common Prayer, For the Right Use of God's Gifts