Sorry Speedlever, you must be an employee of the Qantas Group of airlines.
Sadly I can have a baggage handler whom I've never met (and who may be later charged with terrorism charges... not meaning to cast aspersions on all baggage handler, just that one who was charged and convicted) but my 10 year old boy is apparently a security risk.
Depending on where you are going (domestic or international) there are some options. Some 767s have two crew rest seats down the back which aren't normally sold due to cabin crew to pax ratios. If we carry a couple of minors on board those seats are sometimes available for staff travel use.