Target.
Nothing specific was detailed, other than a copy of their link, which only covers toys, not Merchandise.
I'll include it here anyway (even though it is a fair bit out of date), because the person at Target was one of the few kind enough to respond to my request for merchandise info (which is free publicity for those smart enough to see it).
http://www.target.com.au/transformers
Other items I have found and photographed myself.
Transforming Toothbrush (surrounded by sticker-postcards)

Mega Ball and Tattoos.
By the Promotions Factory, who also produced the reusable shopping bags found at Kmart.

Stationary and stickers.
There's been a heap of stationary released with the Movie theme, and below is just some of the more interesting sticker items and a scrapbook.

And other licensed items I can think of off the top of my head:
- Kids tent.
- Scooter.
- Bike.
- Pinball machine.
- Birthday cards (By Hallmark).
- Blackboard/activity set.
- Stationary activity pack ($40 plastic case of assorted stationary at Kmart).
- Bop Bag (fill base with water).
- Dress up costumes (Megatron, Optimus).
- Plastic masks (Megatron, Optimus, Bumblebee - $2 at BigW).
- Bed sheet set.
- Watch, with several different faces to swap over (about $10 at Toyworld).
- Top Trumps Card game (Found at book stores).
- Transforming Battle Cards set (Kmart had them, probably other stores as well).
- Christmas advent calendar (mentioned in other topic).
http://otca.invisionzone.com/index.php?showtopic=3192
- Decorated chocolates (mentioned in other topic).
- Mug with drinking chocolate (mentioned in other topic).
- Audiovisual items (DVD, HDDVD, CD soundtrack, Console and PC games).
- IDW comics.
- Red Rooster Fast Food meal toys (June-July only, 5 toys).