Here's some stuff that can help with Congregational Songs and shouting music:
Alternate minor 1 and minor 2 chords
Key D
C-F-A or D-F-A (start high on keyboard, go all the way down, go all the way back up)
B-E-G
A-D-F
G-B-E
F-A-D
E-G-B
(repeat)
Alternate major 1 and minor 2 chords
Key D
D-F#-A (start high on keyboard, go all the way down, go all the way back up)
B-E-G
A-D-F#
G-B-E
F#-A-D
E-G-B
(repeat)
Various Bass Lines
Key D
D, F#, G, G#, A, B, C, C#, D
D, E, F, F#, G, B, C, C#, D
D, F#, A, B, C, B, A, F#, D
D, F#, A, G#, G, B, C, C#, D
D, C, A, G#, G, B, C, C#, D
D, B, A, G#, G, B, C, C#, D
D, E, F, A, G, B, C, C#, D
D, E, F, F#, G, F, E, D#, D
D, E, F, F#, G, F#, G, G#, A, C, D, F, G, B, C, C#, D
A, A#, B, F, E, B, A, A, D
A, G#, A, A#, B, A#, A, G, G#, B, D, F, E, D, B, D
D, C, B, F, E, B, A, B, C, C#, D