The possibilities are as follows:
A kangaroo sign in Australia that comes alive and starts to hop around.
A rabbit bouncing on a trampoline which gets higher and higher until it disappears.
A set of cogs/machinery producing a toy.
I have made a simple storyboard for each of the above possibilities to see how I could transfer them into an animation format:
The above idea may be too simple for a 30sec animation.
I like the idea of using a trampoline because it ties in with the repetitive nature of the music and the beat.
This idea works well wit the notion of continuous movement, and has a more clear order to it.
Out of all the ideas I prefer the trampoline one, but it needs to be developed into something more complex, maybe with an event added to the end.