First off, OMG! I know who owns a RisingStar Aussie! Her mom is a member of quite a few boards I frequent. What a coincidence!

Correct me if I'm wrong, but I thought it was 30 characters? Anyhow...
Bring Me Joy at RisingStar
RisingStar's Too Talkative (You could spell it anyway you want, but it is still indirectly related to the call name)
Cheer Me Up at RisingStar
RisingStar Leave Me'N Ecstasy (my god, I think about Les too much LOL)
RisingStar's Blissful Rejoice
RisingStar's Seventh Heaven
On Cloud Nine at RisingStar
RisingStar's Cloud Nine or some other variation...
Hope this helps!