This is the "Royal Easter Show Bag", a buy-able bag of Sonic themed prizes only available at the Australia Royal Easter event. The bag itself (bottom right) is an all-over print thick plastic. It contained the items seen here which include: 2 click-a-color pens (a thick pen with multiple colors in it) a medium size classic Sonic plush doll (30cm), a spiral bound notebook with his face, a flat plastic die-cut-shape keychain & a packaged deck of regular playing cards. The card backs all have the same image (seen through window on the box) Everything about the bag & it's merchandise is classically themed. It's a nice haul of items, for 22 Australia dollars. Likely a better deal even, if the items happen to be exclusive to the event. Licensing Essentials produced all the items. You can learn more about the Royal Easter Show at http://eastershow.com.au This is a 2015 Easter event.
Here is a re-use-able plastic cup with classic Sonic theme. This could only be obtained by buying a promo bag at the "Royal Easter Show" in Australia. There's been a bag from this large convention with Sonic before, but this is the first cup. As you can see, it has a Green Hill theme, checkered band with CG Chaos Emeralds in it, the logo & at least 2 classic Sonic arts.