Here are some of the best free and searchable sermon illustration databases available on the web.
Bible.org Free illustrations categorised around Bible verses and topics.
Holwick.com Thousands of free and searchable sermon illustrations complied by Reverend David Holwick with help from preachers around the world.
soundfaith Once you have created an account you can access user created illustrations and become part of a community of fellow preachers sharing ideas and stories.
Sermon Central Over 42,000 stories, quotes and statistics to enliven your sermons, searchable by keyword, or scripture reference.
SermonSearch SermonSearch groups its materials under different topics such as Anger, Grace, Change, Friendship and Communion.
Ministry127 Searchable by key words and topics.