We extended the ending of Shout to the Lord with a rather interesting series of chords:
This helps extend the 'finale' of the worship service without being too long, as compared to having an entire instrumental reprise of the chorus.
The chords used here are:
A Gb5 F#m Dm/F A
Note that the first 4 chords create a descending bass line, so it feels a little like its ending. However, the transition to chords not found in the key (of A) cause the music to hang on a little longer, and ending on the root chord, A, resolves the built-up tension such that it creates a grander ending.