Darn, I missed night time. Oh well, next time. 
As for art projects, it might be interesting to do a painting or sculpting project. Or maybe something to do with lanterns, like making floating lanterns at one point to release later on during a festival of some sort or something. (Heh, it's hard to think of something power based that they could all do with art, but give me a few hours and maybe I'll come up with something.) 
Um... Yeah... I'm all for capture the flag.