Essentially, I tried to pull in the various elements you mention in the brief into my logo. For the paintbrush for the arts and crafts, the notes for the music/dancing, and the speech bubble for the lectures. I then put these elements into a circle representing the earth. The circle unites these three elements, but each has there own section and identity. I did these to represent the various cultures, showing that there are a large number of things that make each culture unique while still being part of the same world.