http://www.cafepress.com/buy/australia/australian is the link you are looking for.  They have the best selection of tee shirts that I have seen online.  They offer men’s, women’s and children’s sizes in long sleeve, short sleeve, sleeveless, and hooded sweatshirt styles.  They have funny, sweet, patriotic, and every other kind of symbol and design you can imagine.   They have about 30 pages of products and you can also purchase mugs, license plate covers, buttons and magnets.  Some of their prints are offered as posters, and they are really beautiful.  Stickers, caps and even small tiles are available, and I also saw some wall clocks.