[freyashamsters]

9" would be ideal - 8" is good too but she may grow out of that more quickly

I agree with about everything Serendipidity said there - I also think you could use the Boredom Breaker Sleep 'n' Play Cheese toy for her. They're not generally recommended for Syrians as some larger hams have got stuck in the holes as they are a tad too small but would be perfect for your little girl: https://www.viovet.co.uk/Boredom_Bre...cheese&sct_r=1