Binningup Beach is located inside the town of Binningup just before you get to Bunbury, heading from Perth. It features a pirate boat playground with lots of interactive elements, including a kid-powered electronic music maker. There are nearby barbecues and picnic areas.
Regional towns have been rapidly investing money in improving family friendliness for the last decade. As a result there are now many wonderful locations to bring your kids and spend a day having fun. Travelling outside of metro areas for family fun frees you up from having to worry about crowds and allows you to immerse yourself in country culture.