Australian Golden Wattle collage art and craft for kids, to learn about Australia's national flower. This would make a great toddler or preschool activity - my year old toddler was able to do all the elements herself.
Painting gumnuts - I don't even know what a gumnut is or where it grows, but I imagine this idea could be applied to any seed pod, twig or leaf.
Posts about Australia day craft written by cookwithkids
So easy, and always a hit at parties, Fairy Bread.