I'm writing up a list of must-see places in QLD. So far I have:

Waterfalls: Babinda Boulders, Millaa Millaa Falls, Cardwell spa pool, Elliott falls, Josephine Falls, and Fruit Bat Falls
Fraser island: Lake Mackenzie, SS maheno wreck
Whitsundays: Blue Pearl Bay
Gold coast: Dream world, Warner bros movie world, Sea world, Gold coast aqua park, Thunderegg crystal mine, Spirits of the red sands
Surfers paradise
Sunshine coast: The big pineapple + beaches
Heron island: Baby turtles
Paronella Park

Any suggestions for what I can add? Thanks