As always, this gives me a perfect chance to suggest the following:

1. David Holsinger has a ton of music that isn't on the PML, and a good bunch of it is in that "fun" category you're talking about. He was much more popular about 20-30 years ago but his music is still quite good.

2. Cirque do Soleil arranged by Victor Lopez. It's on the easier side of a Grade 4, possibly even a 3.5, but it's got some definite meat your kids can sink their teeth into.