have rung several clubs linked to Gymnastics Australia and they only appear to take classes for kids 2 years old and up.
I will try and find out the details of the Rowville kindigym - don't think they run in the school holidays.
Going to take my son to see The Wot Wots this week at Eastland and also his favourite show Magical Tales - William and Sparkles are performing at Fountain Gate this Thursday at 10am!!!! Hoping to make it there I think they are at Chadstone, Greensborough etc during the week.
keep the ideas coming.