sehscandidate
There are plenty of resources from the internet to choose from, but I can understand they may not all be very substantial. I know oztests for one has a pack of free sample tests, but you have to set up an account first to get access. Also you may or may not have heard but there is a pack of free tests in this website called 'selective trial' in the new ACER format. I'd say the tests are of moderate-hard level, but yeah. You still have to purchase them and they are only valid for three days, and after that you can buy more if you wish (valid till the SEHS exam).
For the creative writing, I don't really know a very reliable way to get prompts so I just use ChatGPT. Here are a few from it:
Time Travel Adventure: You discover an old pocket watch that allows you to travel to any point in history. Write about your adventures and the historical figures you meet.
Dream World: Every night, you visit a fantastical world in your dreams where you have special powers. Describe one of your adventures and how it impacts your waking life.
The Lost Civilization: While on a family vacation, you stumble upon the ruins of a lost civilization. Write about what you find and how it changes your understanding of history.
The Secret Society: You receive an invitation to join a secret society that protects the world from hidden dangers. Describe your initiation and first mission.
Natureβs Revenge: Imagine a world where nature has started to reclaim cities, and humans must adapt to living in harmony with the wild. Describe a day in the life of someone in this new world.
Sorry that this is so long, but I hope this helps, even though it isn't a lot π