Nutsy,
The closest thing I can think of that would work is the Arnotts tea biscuits crushed up.
If he has to include a bit on the language...
In Australia we say a car has a bonnet, a boot and gets filled with petrol. Here a car has a hood, a trunk and gets filled with gas.
In Aus the you ring someone on the phone, and it may be engaged, here you call someone and it may be busy.
In Aus a jumper is something you wear when it's cold - here a jumper is a dress like thingy (that was real clear), if you are cold here you put on a sweater.
In Aus hockey is played on grass or astroturf, here that would be refered to as field hockey. Hockey here is played on ice. After 7 years I still say Ice Hockey and people laugh at me!
In Aus you may live in flat, and if you share it, you have a flatmate, here you have an apartment and if you share you have a roommate (even when you have separate rooms!)
In Aus we throw old stuff in the rubbish, here they through it in the trash or the garbage.
In Aus we say capsicums, here they are called peppers.
In Aus we eat biscuits, here it's cookies (a biscuit here is more scone like and is served with savory dishes and gravy!)
In Aus we put tomato sauce on our chips, here they put ketchup on their fries.
On the subject of food, portion sizes in Canada are bigger than they are in Aus. When I first came to Canada (I am in BC) I could never finish a meal - whether home cooked or at a restaurant. When I took my DH and my inlaws home for a visit, they always felt as if they hadn't eaten enough.
In Aus if you have an entree - it's the course before the main meal, here entree is the main meal!
Canada is much like home, in that their "food" has been very much influenced by the migrants who have made their home here. Just like "Australian" cuisine has been influenced by Greek, Italian, Vietnamese etc cuisine, so has Canadian cuisine.
I had to do a presentation on Australian cuisine here not so long ago - I had to do the dessert section....I made lamingtons, pavlova, and I managed to get hold of some King Island Cheeses (and some Grandfather Port).
And this weekend I am making Anzac biscuits to take to work.