National Youth Week is on April 4th - 13th April. It is the largest celebration of young people in Australia. There are lots of events on in your area, mostly driven by the ideas of young people aged 12-25.
If you have a great idea for an event or project for any forum, it pays to do some research in how to write a winning grant proposal. JCU Library has resources which make the process a little easier.
There also online databases such as GrantsLINK and lists of Australian community grants and research grants which you may find of interest.