The top card (with the fish) was for the "Mandalay Bay" challenge and we had to use some sort of ocean theme or animal, and also the shape of a playing card (or an actual card from a deck if you wanted.) I went with the shape itself and also riffed on the slot-machine, three-in-a-row "jackpot" feel.
The lower right picture (with the little boy) was for the "Circus Cirus" challenge where we had to use the color orange and also fit some type of circus theme into the card. This was actually the first of the challenges that were listed and the first one I played. I didn't feel too creative with my version, but at least I did it. I thought of when I first went to Circus Circus myself, and had my oldest boy with me at the time (he was quite young, though) and how we enjoyed the treats there and the circus.
The final card on the left was for the "Luxor" challenge. This one had to use a triangle shaped card (like the shape of the pyramid) and also use the "faux felt" technique. As I'd never done either of these things, it was quite the challenge. I kept thinking of the phrase, "Vegas, baby!" and so I riffed on that with my little baby-theme (I figured it could be cute for someone announcing a birth or even having a baby shower in the NV area!)
All my supplies are listed in my SCS gallery, so instead of repeating them, I'll just post links to them. I'm sure the closer pictures there are a little better - take a peek if you'd like!
"Mandalay Bay" card: http://www.splitcoaststampers.com/gallery/photo/1293724?cat=500&ppuser=23379
"Circus Circus" card: http://www.splitcoaststampers.com/gallery/photo/1291201?cat=500&ppuser=23379
Whew! Now that I've got at least part of one SCS VSN under my belt, I'm looking forward to trying my hand at the next one! If you've never played, give it a try! I really enjoyed using my stash and trying to come up with stuff on my own within the challenge ideas given.