I'm excited for this because I'm pretty sure I was a complainer last year (sorry!). I'm hoping to do a couple of international giveaways of local products this year too, so people overseas can try them.
Anyway, a few of the bigger online stores here that might be able to offer gift certifcates or something else:
Vegan Online (my favourite, because they're from my hometown and they also run an awesome animal sanctuary)
The Cruelty Free ShopVegan Perfection (they import a lot of overseas stuff to retail stores here, but I've never actually ordered directly from them)
La Panella is a vegan bakery in Melbourne that's pretty much every Australian vegan's favourite place ever (and most vegans gravitate towards Melbourne at least once a year so a gift certificate would totally get used).
Rubyfruit is an amazing new vegan bakery, but their location is kind of in the middle of nowhere so it might not be any good unless they could express post an order of stuff. And
Eggless is an awesome, mostly vegan dessert cafe/bakery in Adelaide.
Excitement!