She's a real cutie! You're moving along well...congrats!
She looks a lot like my Cassie...and acts a lot like her when she first arrived. So, like I said before I'm my PM, go slow...and take your cues from Aussie..she will guide your way along.
As for toys,I'd start with shreddables...they are the easiest toy to get for a nervous bird...not too big, and definitely enjoyed. After thaat,the sky's the limit...indulge yourself.... and Aussie.
You're doing well...upward and onward!