skylanders party game: Spyro's Troll blast. I found some pictures online of blaster trolls and a few drow witches and blew them up, glued to a foam board and the kids threw fireballs (red water balloons) at them.
skylanders party station: Pop Fizz's Alchemy Station. I got 4 different kinds of Kool-Aid and mixed the appropriate sugar in with the mix into separate bowls. I also had various flavors of pop rocks in separate bowls as well. The kids then picked a koolaid flavor (all a surprise) and put 2 scoops into a cup, and 1 scoop of pop rocks and then added water. Once the water is added it shows the color and the pop rocks pop! It was a fun surprise for them... I think it was their favorite :)