How about some loosey goosey spaces, with themes that aren't announced until the event? I remember enjoying Songs From A Hat, because it draws fascinating people who think like that : )

With double bonus points for more than one theme in a song as it progresses! Or is this a drinking game for another world.....

Sally!

Saddle!

Cannon!

Blackbird!

Go!

Clearly, it would be a master class : )

Dani (thinking)