Let me preface this by encouraging people to make their vote count. If you're disillusioned with the major parties, don't do a donkey vote. That'd be a waste. Maybe consider voting for some of the smaller groups and independents.
In the House of reps, I'll be voting for my local Greens candidate (there's a lot of wackos trying out in my electorate).
In the Senate out of the 90 odd candidates, I'll be preferencing Sex party, Secular Party, Hunters and Shooters, Democrats, Greens and independants before anybody else.
Labor, Libs/Nats and any Christian style climate skeptics will be last of all.