The big holographic poster of Coloratura is official Hasbro merch.
The wooden coasters in the foreground were made by Ruirik, as was the wooden box off in the top-right that they are stored in.
I don't remember who I got the woodcut of Twilight from, but it is really nice.
Sweetie Belle is a print from Tsitra360.
Rarity hugging Applejack is a commission from ImDrunkOnTea.
The Rarity button in the lower-left is something I won from Tsitra360 for winning the button guessing game.
The other Rarity, along with Spike and Sunburst, are from Braeburned.
I don't remember who I got the other six buttons from at the moment, but their names are on the tip of my brain. D:
It was really neat going there. I spent a bit talking to Tsitra360 and ImDrunkOnTea, and both were pretty cool dudes. ImDrunkOnTea gave a great one-hour panel on drawing and coloring in photoshop which was really well-done and helpful.
I spent a fair bit of the evenings hanging out with Ruirik, which was a lot of fun; he is a cool dude, and his coasters and pens are really high-quality stuff that you can like, actually physically use.
I'm planning on hanging Sweetie Belle and the Coloratura poster on my walls after I frame them. Probably going to add the Rarity and Applejack hugging to my art book.