based on what He already spoke to you about how He wants to use you in the lives of your supporters.
Brainstorm.
Strategize.
Come up with a Give Calendar.
An encouraging e-mail every three weeks... Birthday cards... praying for them...
RYS ch. 19 has a ton of ideas...
Seriously, ask God. You won't be able to keep up with it in your own strength. Loving your team well will take time. And sacrifice. But it's worth it, for them and for you.
A simple story.
A readable e-mail.
I bet you can do this in less than an hour.
(PS. Don't know where to start? What has God been speaking to you in your quiet times? How could this relate to other people's lives?)