Here's a few of my favorites.....you can add pretty basic chords as posted by MR T BLOCK in his ultimate post for congregational songs... and if you want to change up a bit try doing the basic run in your songs and then add the 7-3-6-2-5-1 progression in there....man oh man!!!I hope I got that right...if not just let me know because I WANT TO LEARN.....
Key of Bb....Do this from right to left <---Could be used on congregational songs
G, Ab, A, Bb, D, Eb, E, F, Bb, F, E, Eb, Db, C, B, Bb, Eb, D, Db, C, Gb, F, A, Bb
Key of Eb....right to left <---could be used in shouting or congregational...T-block also has this one and more in his post
http://www.musicianslearningcenter.net/forum/index.php?topic=314.0 <---I'm pretty sure this is on LGM as well
C, Db, D, Eb, Db, Bb, A, Ab
Key of Db <---this is JAMIin' I learned this from Key-wiz
B, G, A, Bb, A, Ab, G, Gb, Ab, E, F, Db, F, Bb, G, Ab, Bb, Eb, C, Db, F, E, Eb, Bb, A, Ab, C, Db