I have used Hauterive (Ameller) (I believe only available in bass clef),
To a Wild Rose (Macdowell arr. Blaauw), Apres un Reve (is that Ravel?) and Liebesleid (Kreisler arr. Sheridan).
Some of the stuff I've used is not necessarily arranged for Eb Bass or even tuba but for other brass instruments so I've had to be careful as regards register etc.
In Salvation Army repertoire I have used Someone Cares and Prayer of Childhood.