We have done the ubiquitous "Poster Competition"
Last term, we had a "Mouse trap powered car" competition. They had to design a toy car powered only by an old wooden type mouse trap. There were prizes for the car that went the furthest, for most original design, prettiest design, etc
Then there is the annual "UNSW Science Competition", which is an Exam style competition that is Australasia wide. It costs a few $ per student, but they get a neat certificate from UNSW that looks almost as good as a degree from that Uni!
Then there is the STANSW Young Scientist Competition.
Hope this helps
Ian
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