A.G.
Man! There's always that one mom who you just wanna say "LIGHTEN UP!".
Anyway, try music from True Vibe (my favorite song is See The Light, and the lyrics are amazing for inspiring kids), Newsboys, Phil Wickham and of course Mandesa! They all have some great upbeat songs that are Godly and inspirational.
I just realized True Vibe has another song "More" that might be inspirational, depending on how you look at life.
Also, take a look at some Wow! tracks in iTunes. They might have an "upbeat" or "dance" collection, or maybe even a "graduation" collection.
We have a great Christian music radio station here in Houston - KSBJ. You can listen to it on the web, but if you check out their website they have a playlist of all the songs they've played in the last 24 hrs (I think) but anyway, its a pretty comprehensive list of popular Christian music today.
*(added) kids friendly? ok, how about Cedarmont Kids?