Tumble Tots Bendigo run play gym type of classes for children (toddlers to 5 years old), and they also allow kids to participate in casual play sessions in the afternoons. I haven't attended a structured play gym class - only the casual play sessions. They have so many great resources like large foam play/climb shapes, trampolines, blocks, ribbons, balls and other play equipment to enabled kids to jump/hop/skip/run/roll/etc. Very affordable and a great way to entertain the kids.

Approximate cost: $5