Do not wash their car or mow their lawn. They are rewarded through the voucher of the 12th Step. So when ever you are feeling too grateful toward your sponsor, read the 12th Step again. Having had a spiritual awakenings a result of these Steps. Many people will be back when they are ready.
Desperation feeds change.
Don't try to starve them of their desperation. Give them hope. They get hope from what they see in you, not what you want them to know of you. Share with us as often as you like. It will help us and help you, and help us cherish and keep the 12th Step.