Here is an idea that Jan Potter sent our way:
"How I changed my picture of prayer" (click on to link with the article)
As you will see, the title of the article is a play on words. I have actually done similar things over the years using photos. You can simply put some snapshots in your Bible, or use the framed photos you have have by your bed or on your wall. What about a prayer collage, where the photos are updated and rotate over time, and as new needs arise? We so often think of prayer as a matter of words, but opening up the other senses, in this case using a visual prompt, can often encourage and enrich our conversations with God.
What types of things have you used as tools or prompts in prayer?